Skip to main content
Market Analysis5 min read

October 15 Recap: Leaned Bullish, MU $2.8B Bullish, SPX GEX Negative

Written by

$27.1B in single-name premium, 27% bullish versus 24% bearish. MU led at $2.8B Bullish; SPX GEX was −$13.69B.

This edition reads TradingFlow’s Daily Market Recap for October 15, 2026, captured on October 16 (Pacific time). The quoted figures agreed across two runs. This is a completed-session report, not a trade recommendation.

Keep two clocks separate: premium, sentiment, and prints describe the session tape; GEX and IV are the recap’s T+1 / prior-close snapshots. This historical recap is not a live intraday gamma map.

$27.1B, 47% calls, 27% bullish versus 24% bearish. MU led at $2.8B Bullish; SPX net GEX printed −13.69B, Negative.

Open Daily Market Recap or the October 15 session. Sign-in and a paid entitlement may be required.

What the recap printed

October 15 session KPI strip

Test app, session 2026-10-15, KPI. Captured October 16, 2026 (Pacific time).

ReadingRecap value
Single-name premium$27.1B
Call / Put47% / 53%
Bullish / Bearish27% / 24%
Overall toneleaned bullish
First 30-minute window09:30 · $3.9B

Sentiment bars: Neutral $13.1B, Bullish $7.5B, Bearish $6.7B. Call share is option type, not bullish sentiment. Neutral premium supplies no direction; chapter values and the KPI total are separate displayed fields, which need not reconcile exactly.

October 15 premium by sentiment

Test app, session 2026-10-15, Step 1. Captured October 16, 2026 (Pacific time).

Leaders: where premium concentrated

October 15 top names by premium

Test app, session 2026-10-15, Step 2. Captured October 16, 2026 (Pacific time).

SymbolPremiumCallPutNet bias
MU$2.8B$1.4B$1.5BBullish
NVDA$1.7B$1.2B$504MBullish
SNDK$1.6B$540M$1.1BBullish
AMD$1.0B$496M$511MBullish
TSLA$809M$441M$368MMixed
META$733M$574M$159MMixed

MU, NVDA, SNDK, and AMD carried Bullish tags, while TSLA and META were Mixed. MU, SNDK, and AMD each showed more put than call premium. A put-heavy mix can coexist with a Bullish classification.

The bottom line and glance show MU $2.8B; the leaders table and headline cards show MU $2.8B. Preserve these field readings rather than reconciling them into a new number.

October 15 bottom line and glance

Test app, session 2026-10-15, Bottom line / glance. Captured October 16, 2026 (Pacific time).

Exposure and volatility context

The glance lists NVDA +4M shares-equiv. as largest Net DEX and MU 133% as largest Net DEI magnitude. Step 4 prints MU 133%, with Positive Net DEX. DEI is an unsigned activity-relative magnitude; DEX provides a separate signed classification. Neither proves opening intent or actual dealer inventory.

Step 5’s highest IV rank among active names is RKLB 100 / 100, with 130.5% 30-day implied volatility. This is snapshot volatility context, not realized session volatility.

Index GEX: SPX Negative

October 15 index GEX backdrop

Test app, session 2026-10-15, Step 6 · T+1. Captured October 16, 2026 (Pacific time).

IndexNet GEX ($B)Regime
SPX−13.69Negative
SPY+4.06Positive
NDX−3.89Negative
QQQ−2.85Negative
IWM−2.66Negative
DIA+0.21Positive

SPX, NDX, QQQ, and IWM were Negative; SPY and DIA were Positive. A bullish session tape did not make every modeled index gamma book Positive.

GEX describes modeled chain structure under TradingFlow’s dealer-sign convention. The regime does not establish observed dealer inventory, a support level, a pin target, or the next session’s direction.

Headline name: MU at $931

MU headline cards for October 15

Test app, session 2026-10-15, Step 8. Captured October 16, 2026 (Pacific time).

Cards: last $931, premium $2.8B, 48% calls, 29% bullish, 75% average IV on traded contracts. The headline name is selected by premium, not by the largest price move.

TimeTypeStrikeExpiryPremiumSentiment
14:37PUT1,0702026-10-16$42MBULLISH
15:22PUT1,0602026-10-16$36MBULLISH
14:25PUT1,0702026-10-16$36MNEUTRAL
14:37PUT1,1002026-10-16$33MBULLISH
15:22PUT1,0702026-10-16$28MNEUTRAL
14:37PUT1,1002026-10-16$28MNEUTRAL

MU biggest prints for October 15

Test app, session 2026-10-15, Step 8 · prints. Captured October 16, 2026 (Pacific time).

The largest listed ticket was 14:37 1,070 PUT, expiry 2026-10-16, premium $42M, tagged BULLISH. The largest ticket was a Bullish put, followed by another Bullish put. The table also shows Neutral puts at nearby strikes and the same expiry. The report’s classification must be read separately from option type.

Ticket tags do not prove who bought or sold, whether a position opened, or whether adjacent prints form a single strategy.

Movers: CYPH +23.8%

October 15 intraday movers

Test app, session 2026-10-15, Step 7. Captured October 16, 2026 (Pacific time).

Bottom line: CYPH +23.8%. Step 7 in both runs: CYPH 23.9%, Up. Keep both displayed fields. The bottom line names the largest gain; Step 7’s key can select a gain or loss across runs.

The intraday_pct reading is a first-to-last underlying-price proxy in the option tape. It is not an independently verified daily stock return, and movers do not prove flow causality.

What this session is evidence of

QuestionTradingFlow readingClock
Size / tone$27.1B · 27% Bullish / 24% BearishSession tape
ConcentrationMU $2.8B BullishSession leaders
Relative exposureMU DEI 133% · DEX PositiveSession exposure
VolatilityRKLB IV rank 100 · IV 130.5%T+1
Index structureSPX −13.69B NegativeT+1
Largest printMU 1,070 PUT 2026-10-16 $42M BULLISHSession ticket

Reproduce the findings

  1. Open the October 15 recap; confirm Oct 15, 2026 in the session KPI.
  2. Record the KPI strip and Step 1 sentiment before reading the leaders.
  3. Compare MU’s leaders-table tag, headline cards, and largest ticket.
  4. Read Steps 4–6 separately: exposure magnitude, volatility rank, and all six index GEX rows.
  5. Keep both mover fields, the session date, and the snapshot clock. Stop before turning a report into a buy/sell instruction.

TradingFlow App Home → Cookbooks → Daily Market Recap → select the completed session.