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PM RESEARCH MEMO

Title: Oil–Rates Correlation Jumps to a 35-Year High — Post-Fed Vol Crush, Index vs Single-Stock Split, SPX Skew Flatten
Author / source: Mandy Xu, VP, Head of Derivatives Market Intelligence, Cboe Derivatives Market Intelligence
Source title: Macro Volatility Digest — "Oil-Rates Correlation Jumps to a 35-Year High"
Source date: Monday, September 21, 2026
Week covered: Week ending Friday 18 Sep 2026 (digest dated Mon 21 Sep; Fed +25bps referenced as last week, as expected)
Gmail: mxu@cboe.com msg 1a0c444304c89905
Local files:
- TXT: /workspace/emails/Macro_Volatility_Digest_Sep21.txt
- PDF: /workspace/emails/Macro_Volatility_Digest_Sep21.pdf
- Page images: /workspace/emails/cboe-sep21-pages/page-1.png … page-6.png
Memo date: Monday, September 21, 2026 (America/Toronto)
Source type: Weekly Cboe cross-asset implied-vol / correlation monitor. Six pages: commentary + exhibits (p1), cross-asset IV vs RV and 10Y z-scores (p2), 1M correlation matrix and history (p3), macro equity vol table / VIX complex (p4), US index ATM / skew / term structure (p5), contacts & disclaimers (p6).
Product: Vol-regime map for allocation research. Not advice. This memo does not recommend a trade.
Prints: All IVs, percentiles, correlations, MOVE/VIX/OVX/VIXEQ/DSPX levels, and skew percentiles are source as of the digest. Live spots, live OIS/Fed path, live Brent/WTI, live VIX = External check needed. Do not treat as live.
Source discipline: Use only this digest as primary source. Chart levels that are not numerically labeled are flagged chart-read. No buy/sell. Do not silently import numbers from the Sep 14 or Aug 31 Cboe memos into this memo’s tables; those may be cited only as External / other desk companion for delta framing with explicit label.


EXECUTIVE SUMMARY


SOURCE-ACCURATE SUMMARY

Page-ordered. Digest attribution unless labeled chart-read or inference.

Page 1 — Commentary and exhibits

  1. Headline (source). "Oil-Rates Correlation Jumps to a 35-Year High."
  2. Fed / cross-asset IV (source). Fed raised rates as expected by 25bps; implied volatilities declined across asset classes last week.
  3. MOVE (source). Interest rate vol fell even as nominal yields increased: MOVE −1.5 nms to 80bps (86th percentile high over the past year).
  4. OVX (source). Commodity vols declined most on easing Middle East tensions; oil vol (OVX) fell almost 9 pts wk/wk to 50%.
  5. VIX (source). Equity vol −1.0 pt; VIX ended week at 14.8% (7th percentile low).
  6. 10Y z-score relative value (source). FX and credit vols cheapest cross-asset IV, trading ~1 SD below long-term average (Exhibit 1). Gold and oil richest this year; gold >1 SD above average.
  7. Index vs single-stock (source). Index vol declined; single-stock vol increased. VIX −1.0; VIXEQ +almost 2 pts to 36%. Spread 18.5% → 21.6% (43rd percentile past year).
  8. DSPX (source, Exhibit 2). Higher bond yields historically catalyze stock dispersion (different rate sensitivities). DSPX +2.6 pts from recent low as implied stock dispersion increased.
  9. Skew (source). Skew flattened across major indices. SPX 1M skew (25-delta ratio) 58th → 29th percentile as investors sold hedges and rotated into calls. SPX 1M call skew (25d vs 50d) to 78th percentile.
  10. COR1M (source). Overall equity correlations extremely muted — COR1M Index sub-10 currently.
  11. Cross-asset corr extremes (source). Equity–rates persistently negative since Iran War onset; equity–oil near extreme negative (see p3).
  12. Oil–rates 35y high (source, Exhibit 3). 3M rolling corr US 10Y vs WTI oil +65% last week — 35-year high; above COVID and 2011 Arab Spring; only slightly below 66% First Gulf War 1990 record.
  13. Author attribution (source). If this pattern holds, where yields go from here will be less dependent on the Fed and more on the situation in Iran.
  14. Exhibit chart-reads. Ex1: gold z-score still elevated (>+1; earlier spike toward ~+7 visible); oil elevated; FX/IG near ~−1; VIX/MOVE nearer mid (unlabeled exact). Ex2: DSPX peaked near ~47 mid-2026, low near ~30 Sep, bounce toward ~33–35 (unlabeled). Ex3: long history 1985–2025+; far-right spike to +65% near 1990 dotted extreme.

Page 2 — IV vs RV monitor; 10Y z-scores

  1. Six IV/RV panels (source series; currents mostly unlabeled). Equity: VIX near year lows ~14.8 above SPX RV (matches commentary/table). Rates: MOVE ~80 bps after March >~110–120 (chart-read; matches 80). IG: VIXIG near bottom of 1Y range ~20 bps (chart-read). Oil: OVX crushed from earlier ~100–120% spike toward ~50% (matches). Gold: RV spikes earlier; currently IV ~20–25% with RV often above (matches I–R −3.7). USDJPY: IV/RV ~8–10% (chart-read).
  2. Z-score how-to (source). +2 = rich (2σ above 10Y avg); −2 = cheap. Standardizes lognormal vs normal, price vs bps vol so asset-class vols compare on one scale.
  3. Current z-scores (source narrative + chart-read). Printed: FX/credit ~−1 SD (cheapest); gold >+1 SD (richest); oil rich this year. Chart-read levels: gold still above +1 (off ~+7 peak); oil ~+1-ish; VIX/MOVE near ~0; FX/IG ~−1. Exact unlabeled values = chart-read only.

Page 3 — 1M correlation matrix and history

  1. Intra-equity (source matrix). SPX–RTY 80%; SPX–SX5E 44%; RTY–SX5E 45%; SPX–NKY −24%; RTY–NKY −35%; SX5E–NKY −11%; SPX–MXEF −8%; RTY–MXEF −7%; SX5E–MXEF −1%; NKY–MXEF 76%.

  2. Equity vs cash-bond futures (source). SPX–IBIG 53%, RTY–IBIG 68%, SX5E–IBIG 39%, NKY–IBIG −36%, MXEF–IBIG −29%. SPX–IBHY 49%, RTY–IBHY 70%, SX5E–IBHY 31%, NKY–IBHY −51%, MXEF–IBHY −29%. IBIG–IBHY 83%.

  3. Equity vs CDX (source). SPX–CDX IG −73%, RTY −67%, SX5E −63%, NKY +7%, MXEF −4%. SPX–CDX HY −72%, RTY −67%, SX5E −61%, NKY +8%, MXEF 0%. CDX IG–HY 98%. IBIG–CDX IG −75%; IBHY–CDX IG −58%; IBIG–CDX HY −75%; IBHY–CDX HY −57%.

  4. Equity vs Treasury yields (source). SPX–10Y −55%, RTY −59%, SX5E −49%, NKY +25%, MXEF +23%. SPX–30Y −52%, RTY −56%, SX5E −55%, NKY +23%, MXEF +30%. 10Y–30Y 96%. IBIG–10Y −93%, IBHY–10Y −65%. CDX IG–10Y +81%, CDX HY–10Y +81%. CDX IG–30Y +76%, CDX HY–30Y +78%. IBIG–30Y −88%, IBHY–30Y −58%.

  5. Commodities (source). SPX–Oil −47%, RTY −49%, SX5E −53%, NKY −3%, MXEF −8%. SPX–Gold +62%, RTY +59%, SX5E +5%, NKY −15%, MXEF +1%. SPX–Copper +39%, RTY +39%, SX5E +33%. Oil–Gold −34%; Oil–Copper −53%; Gold–Copper +54%. Oil–10Y +58%, Oil–30Y +67%, Oil–CDX IG +67%, Oil–CDX HY +68%. Oil–IBIG −53%, Oil–IBHY −39%.

  6. FX (source). SPX–EURUSD +40%, RTY +32%, SX5E −24%. SPX–USDJPY −64%, RTY −55%, SX5E −22%, NKY +53%, MXEF +24%. SPX–GBPUSD +30%, RTY +20%, SX5E −25%. EURUSD–GBPUSD 83%; EURUSD–USDJPY −58%; GBPUSD–USDJPY −42%. Gold–EURUSD +63%, Gold–GBPUSD +54%, Gold–USDJPY −51%. Oil–EURUSD +14%, Oil–USDJPY +10%, Oil–GBPUSD −2%.

  7. History charts (current ≈ matrix unless noted). Equity–rates (SPX vs 10Y): persistently negative; current ~−55% (matches matrix); commentary: negative since Iran War onset. Equity–corp bond: SPX/IG and RTY/HY positive mid-pack (~+50–70%). Equity–oil: deeply negative since early 2026; current ~−47%. Equity–gold: elevated positive ~+62%. SX5E–EURUSD: volatile; recent chart-read near modest positive (matrix cell SX5E–EURUSD −24% — use matrix as numeric anchor). NKY–USDJPY: recently firmer; matrix +53%.

  8. Window note (source discipline). Commentary’s 3M oil–US10Y corr +65% (Exhibit 3 / 35y high) ≠ p3 1M matrix Oil–10Y +58%. Both are source; different horizons.

Page 4 — Macro equity vol table; VIX complex

  1. US 1M monitor (source table).
Ticker 1M IV Wkly chg 1Y pctl 1M RV I–R spread I–R 1Y pctl
SPX 11.8 −0.6 2 9.6 2.1 46
RTY 16.4 −1.2 3 11.7 4.7 66
QQQ 16.9 −0.5 4 13.8 3.1 54
  1. International 1M monitor (source table).
Ticker 1M IV Wkly chg 1Y pctl 1M RV I–R spread I–R 1Y pctl
SX5E 15.5 +0.7 57 13.6 1.9 72
DAX 15.8 +0.7 61 13.5 2.2 73
EEM 22.1 +0.4 47 20.0 2.1 70
EFA 18.1 +5.1 69 11.3 6.8 93
EWZ 42.0 +1.4 98 22.4 19.6 98
FXI 19.9 +0.3 16 16.1 3.8 62
  1. Cross-asset 1M monitor (source table).
Ticker 1M IV Wkly chg 1Y pctl 1M RV I–R spread I–R 1Y pctl
USO 46.0 −8.4 51 44.1 1.8 41
GLD 20.6 −2.1 14 24.3 −3.7 34
TLT 11.0 +0.4 67 9.4 1.6 71
IEF 5.8 −0.3 77 5.6 0.3 40
LQD 6.1 −0.6 58 6.6 −0.5 21
HYG 3.8 −0.1 48 4.4 −0.6 28
  1. Scatter / movers / ranges (source). Cheap (RV>IV): GLD (I–R −3.7). Rich (IV>>RV): EWZ (I–R +19.6 / 98th); EFA rich I–R (+6.8 / 93rd). Biggest weekly movers (bar chart order, verified): USO −8.4, EFA +5.1, GLD −2.1, EWZ +1.4, RTY −1.2, DAX +0.7. 1Y IV ranges: SPX/RTY/QQQ/FXI near bottom; EWZ near top.

  2. VIX complex (source charts; currents mostly unlabeled). VIX ~14.8 (commentary). VVIX chart-read ~80–90 (lower end of year). UX2–UX1 chart-read slightly above average (~+1.0 to +1.5 avg line) — contango. Spot-vol betas chart-read: VVIX/VIX toward ~4.0; SPX/VIX toward ~−1.5 recently (reverse axis). Not labeled — do not invent; External check needed for live betas. VIX IV vs RV panel: realized spikes historically much larger than implied (y-scale 0–250%).

Page 5 — US index ATM, spreads, skew, term, cross-section

  1. ATM 1M (source chart). SPX/RTY/QQQ at lower end of 1Y ranges — consistent with table 11.8 / 16.4 / 16.9. March 2026 spike visible (chart-read).
  2. Relative spreads (source). QQQ–SPX chart-read ~5% (table 16.9−11.8 = 5.1). RTY–SPX chart-read ~4.5–5% (table 16.4−11.8 = 4.6). Both off mid-2026 spike highs (QQQ–SPX had spiked >12% chart-read).
  3. Skew 1M 25d ratio (source chart). SPX / RTY / QQQ flattening trend; SPX highest ~1.4 chart-read; RTY lower ~1.3. Labeled p1 statistics = skew 29th pctl, call skew 78th — use those over unlabeled ratio levels.
  4. Term structure 1Y–1M (source). Contango; spreads clustered ~4–6% chart-read. No printed 1Y–1M percentile this week (unlike Sep 14 companion).
  5. Cross-sectional skew (source). SPX current lower than 1-week-ago, bottom quartile of 1Y range (matches flatten / sold hedges). RTY also at bottom of 1Y range, slightly below 1w ago.
  6. Cross-sectional term structure (source). SPX and RTY upward-sloping; short tenors at bottom of 1Y range; RTY entire curve hugging 1Y floor. Absolute vol still historically cheap on 1Y lookback despite post-Fed week.

Page 6 — Contacts / disclaimers

  1. Desk (source). Mandy Xu (VP, Head; mxu@cboe.com; +1 646 856 8799). Ed Tom (Sr. Dir; etom@cboe.com; +1 212 378 4517). Henry Schwartz (VP; hschwartz@cboe.com; +1 646 856 8766). Wei Liao (Dir, HK; wliao@cboe.com; +852 2632 9572). Products for sophisticated participants; losses can exceed deposits. This memo is not a Cboe product and not a recommendation to transact.

SYSTEMS MAP / VALUE CHAIN ANALYSIS

Key players and flows

Bottlenecks and leverage points

  1. Oil–rates regime vs Fed path. 3M corr +65% / 35y high is the digest’s central leverage point. If stable, MOVE/IEF/TLT research must track Iran/oil as much as FOMC — author’s own claim.
  2. Index crush vs single-stock rise. VIX/SPX ATM at extreme low ranks while VIXEQ 36% and DSPX bounce — pricing power migrating to dispersion / idiosyncratic, not index ATM.
  3. Skew shape flip. Put-side skew 29th + call skew 78th after prior week’s put steepening (External companion). Surface shape changed faster than absolute vol left the 1Y floor (p5 curves still at range bottoms).
  4. Cheap FX/IG vs rich gold/oil. Cross-asset z-score map is the relative-value bottleneck for multi-asset vol research — not a ticket list.
  5. Impaired classic diversifiers. SPX–IBIG +53%, SPX–gold +62%, SPX–10Y −55% (yields up when equities down). CDX and (selectively) oil vol retain more intuitive hedge signs in this window.

Upstream / downstream


SECOND AND THIRD-ORDER EFFECTS

Primary = source. Second/third = inference unless tagged.

Chain 1 — Modal Fed hike delivered; index vol crushed; rates vol residual and oil–rates regime remain the macro spine.
[Primary] Fed +25bps as expected; VIX 14.8 / 7th (−1.0); SPX ATM 11.8 / 2nd; MOVE 80 / 86th (−1.5) even as nominal yields up; oil–US10Y 3M corr +65% / 35y high; author: yields less Fed-dependent, more Iran (source).
→ [Second] Event-week equity-vol supply met modal outcome; the binding macro uncertainty migrated toward oil/Iran-linked yields rather than the hike binary.
→ [Third] If oil–rates corr holds near extremes, a ME de-escalation softens both oil vol and yields (constructive for duration+equity), while escalation lifts yields with oil and pressures equities (SPX–Oil −47%, SPX–10Y −55%) — classic 60/40 fails.
→ [Relevance] Watch 3M oil–10Y vs +65%; MOVE vs 86th/80; OVX vs 50%; VIX vs 14.8/7th. Hypothesis, not a trade.

Chain 2 — Index vol down, single-stock vol up; dispersion rising with yields.
[Primary] VIX −1.0; VIXEQ +~2 to 36%; spread 18.5→21.6% (43rd); DSPX +2.6; higher yields historically raise dispersion (source).
→ [Second] Post-Fed “vol crush” is incomplete — crushed index, not micro. COR1M sub-10 + rising VIXEQ = low beta corr with higher idiosyncratic.
→ [Third] Further yield backups could extend DSPX/VIXEQ−VIX; yield reverses could compress dispersion again. Tech idiosyncratic shock would widen QQQ–SPX and VIXEQ without necessarily lifting SPX skew (currently 29th).
→ [Relevance] VIXEQ−VIX vs 21.6%/43rd; DSPX vs +2.6 bounce; COR1M sub-10 hold; QQQ–SPX ~5.1. Hypothesis, not a trade.

Chain 3 — Skew flattened / call skew richened after prior week’s put-hedge bid.
[Primary] SPX 1M skew 58th→29th; call skew to 78th; investors sold hedges, rotated into calls; p5 cross-section lower vs 1w ago (source).
→ [Second] Risk sentiment constructive in shape even as absolute ATM sits at 2nd pctl — market paying for upside relative to downside vs last week.
→ [Third] Iran/oil shock → put skew can re-steepen quickly from 29th (path of prior week External companion); continued ease → call skew 78th may mean-revert while ATM stays low. Absolute vol at 1Y-range floor (p5) means shape can move a lot without ATM leaving extreme cheap ranks.
→ [Relevance] Skew vs 29th; call skew vs 78th; SPX 1M vs 11.8/2nd. Hypothesis, not a trade.

Chain 4 — Oil vol crushed on easing ME tensions; oil–rates corr still at 35y high.
[Primary] OVX −~9 to 50%; USO −8.4 to 46.0; I–R only 41st; 3M oil–10Y +65% still 35y high (source).
→ [Second] Spot-vol of oil can fall while correlation of oil with yields stays extreme — different objects. Vol crush ≠ regime break.
→ [Third] Re-escalation: OVX/USO re-gap from mid-pack percentiles while oil–rates corr may already be “pre-linked,” transmitting faster into MOVE/IEF. De-escalation: OVX stays ~50 while corr mean-reverts from +65% — yields re-anchor to Fed.
→ [Relevance] OVX vs 50%; USO 46.0/−8.4/51st; 3M corr vs +65%/66% record; 1M matrix Oil–10Y vs +58%. Hypothesis, not a trade.

Chain 5 — Cross-asset RV: FX/IG cheapest; gold/oil richest; gold cheap vs its own realized.
[Primary] FX/credit ~−1 SD cheap; gold >+1 SD rich; oil rich this year; GLD I–R −3.7 / 34th; LQD I–R 21st (source).
→ [Second] “Rich gold vol” on 10Y z-score can coexist with “cheap gold vs trailing RV” — level vs VRP distinction.
→ [Third] If gold–SPX stays +62%, gold’s equity-diversifier job remains impaired even if z-score mean-reverts; FX/IG cheapness is the cross-asset vol research sleeve with least printed richness.
→ [Relevance] Gold z-score >+1; GLD 20.6/14th / I–R −3.7; LQD/HYG I–R pctls; SPX–gold +62%. Hypothesis, not a trade.


SCENARIO FRAMEWORK

Horizon: days–2 weeks (post-Fed residual / ME headlines); 1–2 months (oil–rates corr persistence; dispersion); 1–2 quarters (Iran-war corr regime stickiness). Probabilities qualitative. Live spots/OIS/VIX = External check needed.

Base — "Post-Fed crush sticks; oil–rates corr stays elevated; dispersion holds"

Probability: Medium-High as digest-implied continuation (not a forecast).
Assumptions: No severe ME re-escalation; Fed path roughly as priced post +25bps; VIX holds low-teens / low percentiles; OVX plateaus near ~50% without reclaiming prior week’s 59% (External companion level — labeled only); VIXEQ−VIX near 21.6%; oil–10Y 3M corr stays high-decile vs history even if off the exact +65% print.
Vol path: SPX ATM stays low-teens / bottom-decile 1Y; skew oscillates mid/low (near 29th) with call skew elevated but mean-reverting from 78th; MOVE softens slowly off 86th but stays above summer lows; DSPX holds bounce.
Winners as exposures (not recs): dispersion / single-stock vol research; FX/IG vol relative-value research; rates-vol as oil/Iran expression.
Losers as exposures: treating “VIX 7th pctl” as all-clear for oil–yields risk; gold-as-equity-hedge at +62% corr; 60/40 if oil–rates link holds.
Leading indicators: 3M oil–10Y vs +65%; MOVE vs 80/86th; OVX vs 50%; VIXEQ−VIX vs 21.6%; SPX skew vs 29th.

Bull (risk assets / low-vol) — "ME eases further; oil–rates corr mean-reverts; full vol harvest"

Probability: Low-Medium.
Assumptions: Sustained ME de-escalation; oil–10Y 3M corr falls materially from +65% toward mid-cycle; MOVE leaves 86th down; gold z-score mean-reverts from >+1; VIXEQ−VIX bleeds toward prior week’s ~18.5% or lower; call skew leaves 78th without put re-steepening.
Vol path: VIX softens further / stays ≤7th–15th pctl; OVX/USO give back more; US index IVs stay at 1Y-range floors; Europe I–R (SX5E/DAX/EFA) normalizes from elevated percentiles.
Winners as exposures: duration and equities if SPX–IBIG corr falls from +53%; credit; structured vol supply into low ATM.
Losers as exposures: long MOVE / long oil vol / long gold vol richness; EWZ 98th/98th idiosyncratic long-vol.
Leading indicators: oil–10Y 3M corr down from +65%; OVX stable/down from 50%; MOVE down from 86th; SPX–Oil less inverse than −47%; SPX–IBIG toward 0; SPX–gold toward 0.

Bear (risk assets / low-vol) — "Iran/oil re-escalation; oil–rates corr transmits into equities and MOVE"

Probability: Medium as left-tail; Low-Medium as base path. Trigger in-file: Iran/oil situation (author’s yields-path linchpin) plus already-extreme oil–rates corr.
Assumptions: ME escalation reprices oil tails; OVX gaps from 50%; oil–10Y corr stays ≥+60% or rises toward 66% record; equity–oil stays deeply negative; SPX skew re-steepens from 29th; MOVE holds/rises from 86th.
Vol path: SPX ATM leaves 2nd pctl; VIX leaves 7th; put skew back through mid/high percentiles; UX2–UX1 compresses; USO I–R rises from 41st; VVIX lifts from ~80–90 chart-read.
Winners as exposures: 1M SPX put convexity; oil vol; MOVE; CDX (−73% vs SPX).
Losers as exposures: short-dated ATM shorts that treated 2nd/7th pctls as permanent; 60/40; gold-as-equity-diversifier (+62%); HY cash if growth shock (RTY–IBHY +70%).
Leading indicators: OVX through 50% toward prior 59%+; 3M oil–10Y holding ~65% or rising; SPX 1M leaving 11.8/2nd; skew leaving 29th up; MOVE stuck ≥86th; DSPX/VIXEQ−VIX behavior under stress.


COMPANY / ASSET WATCHLIST

No ratings. No buy/sell. Metrics = digest pivots unless flagged.

SPX / VIX / VVIX / UX

MOVE / TLT / IEF / oil–rates link

OVX / USO / WTI

VIXEQ / DSPX / COR1M

QQQ / RTY

SX5E / DAX / EFA / EWZ / FXI / EEM

GLD

LQD / HYG / CDX / FX vol


DILIGENCE QUESTIONS & RESEARCH AGENDA

  1. P0 — Oil–rates 3M corr at +65% / 35y high: confirm window construction (yields vs futures? WTI which contract?). Does 6M/1Y corr tell the same story? Compare to 1M matrix +58%.
  2. P0 — Iran/ME path: live headlines vs digest’s “easing tensions” attribution for OVX −9. Horizon 24–72h. Live oil spot = External check needed.
  3. P0 — Post-Fed path: live OIS/forwards after +25bps as expected. Digest does not print current hike odds (External check needed). Whether MOVE stays 86th without a hike binary.
  4. P0 — SPX skew live vs 29th / call skew vs 78th. Confirm p5 ratio chart-reads (~1.4 SPX). Skew re-steepening = Hedge demand returning; hold/flatten = constructive shape persists.
  5. P1 — VIXEQ−VIX at 21.6% (43rd) and DSPX +2.6: methodology, names concentration, whether yield backup is sufficient explanation or earnings/idiosyncratic mix.
  6. P1 — COR1M sub-10 with rising single-stock vol: replicate; is muted index corr structurally Iran-war regime or 1M artifact?
  7. P1 — OVX 50% vs prior week 59% (External companion): how much of −9 is spot vs vol-of-vol vs wing? Wing levels not printed this week.
  8. P2 — Exact numeric 10Y z-scores for gold/oil/VIX/MOVE/FX/IG (narrative ~−1 / >+1; charts unlabeled).
  9. P2 — EFA +5.1 / I–R 93rd and EWZ 98th/98th: country/regional catalysts (not in digest).
  10. P2 — Dealer positioning behind hedge selling / call rotation. Gamma/0DTE/put-call = External check needed. Do not silently mix other desk SV memos.
  11. P3 — Equity–gold +62%: 3M/1Y context. Failed equity-diversifier structural or 1M only?
  12. P3 — Two-week / one-week delta vs Sep 14 and Aug 31 companions (External / other desk only): formalize skew flip (73rd→29th), OVX 59→50, VIX 15.8→14.8, VIXEQ−VIX ~17→21.6, without importing those memos’ table cells into this memo’s source tables.
  13. P3 — Spot-vol betas (VVIX/VIX ~4.0, SPX/VIX ~−1.5 chart-read). Need numeric extract before risk-model use.
  14. P3 — Term structure: no printed 1Y–1M percentile this week; extract from p5 if needed for comparability to Sep 14’s 5.0%/75th (External companion).

RISK ANALYSIS

Thesis risks
- Wrong “vol is dead” read. VIX 7th / SPX 2nd coexist with MOVE 86th, oil–rates 35y high, VIXEQ 36%, call skew 78th. Index ATM crush ≠ macro or micro all-clear.
- Wrong oil read. OVX 50% after −9 on easing tensions ≠ oil–rates regime break (+65% 3M still extreme). Vol and correlation are different objects.
- Wrong diversifier. Duration/gold as equity hedges contradict SPX–IBIG +53% and SPX–gold +62%. CDX has the right sign; oil links yields and equities adversely when corr stays high.
- Wrong Fed-dependence. Author’s claim (yields less Fed-dependent if pattern holds) is inference-grade source attribution, not a proven structural law — flag as hypothesis.
- Mixing series / windows. VIX ≠ SPX ATM ≠ OVX ≠ MOVE (bps). 3M oil–10Y +65% ≠ 1M matrix +58%. p1 “25-delta ratio” skew percentile ≠ p1 “25d/50d call skew” ≠ unlabeled p5 ratio levels.
- Mixing weeks. Do not paste Sep 14 / Aug 31 numbers into source tables; companions only with External / other desk label.

Timing risks
- Digest is Mon 21 Sep 2026 snapshot of prior week; ME/Iran headlines can invalidate OVX 50% and “easing tensions” within days.
- Post-Fed vol crush can reverse if path communication surprises (External check needed for live forwards).
- Oil–rates corr at extremes can mean-revert violently; 35y high is a level, not a forecast of persistence.

Execution / data risks
- Chart-reads (z-scores exact, VVIX, UX2–UX1, p5 skew ratios, betas, USDJPY ~8–10%, DSPX absolute level, SX5E–EURUSD chart vs matrix) can be off by a point+.
- 1Y percentiles include Mar–Apr 2026 oil/vol spike; “2nd/7th pctl” is cheap vs this year. 10Y z-scores (VIX nearer ~0 chart-read) are the cross-check.
- Cboe window/IV definition required for replication.
- Gmail msg id 1a0c444304c89905 is provenance only — not a live re-pull in this memo.

External / regime risks
- Iran/oil situation is Chain 1/4 Bear linchpin — author’s own yields-path claim.
- Corr regime can flip fast (history charts on p3 span wide ranges inside a year).
- Index/stock split can reverse on one macro shock (VIXEQ−VIX compresses as index vol gaps) or one mega-cap idiosyncratic (dispersion extends).
- Snapshot Mon 21 Sep 2026, not a 4Q outlook or Cboe forecast. Cboe disclaimer: sophisticated participants only; losses can exceed deposits. This memo does not recommend transacting in those products.


APPENDIX — Chart-read / External check list

Chart-read (visual; not printed table values)

Item Page Estimate Status
Exhibit 1 gold / oil / VIX / MOVE / FX / IG 10Y z-scores p1/p2 gold >+1 (off ~+7 peak); oil elevated ~+1; VIX/MOVE ~0; FX/IG ~−1 Narrative ~−1 / >+1 are source; exact chart levels unlabeled
Exhibit 2 DSPX path p1 peak ~47 → low ~30 → bounce toward ~33–35 +2.6 pts is source; absolute level unlabeled
Exhibit 3 oil–10Y history p1 spike to +65% near 1990 ~66% dotted extreme +65% / 66% / 35y are source
MOVE / VIXIG / USDJPY / OVX on IV/RV panels p2 ~80 bps / ~20 bps / ~8–10% / ~50% MOVE 80 & OVX 50% match commentary; others unlabeled
VVIX p4 ~80–90 Unlabeled
UX2–UX1 p4 slightly above avg (~+1.0–+1.5 avg line) Unlabeled
VVIX/VIX and SPX/VIX spot-vol betas p4 ~4.0 / ~−1.5 recent Unlabeled
p5 SPX/RTY/QQQ 25d skew ratios p5 ~1.4 / ~1.3 / mid Unlabeled (29th & 78th pctls are source)
p5 1Y–1M term spreads p5 ~4–6% cluster contango Unlabeled; no printed percentile this week
QQQ–SPX / RTY–SPX p5 ~5% / ~4.5–5% Consistent with table diffs 5.1 / 4.6
SX5E–EURUSD history chart vs matrix p3 chart-read may show modest positive recently Use matrix −24% as numeric anchor

External check needed

Source-printed anchors (do not overwrite)


Desk copy. Source-disciplined. Not a trade recommendation. Memo date: Monday 21 September 2026 (America/Toronto). Do not publish to here.now. Do not email.

Desk copy · not a trade recommendation · Erica · 21 Sep 2026