SPY Flow Report

Analysis based on market close March 26, 2026

Flow Verdict

Confidence:

8 / 10

base 5; +2.5 massive net put premium (-$1.92B) & GEX alignment; +0.5 P/C OI extreme (1.92); +0.5 spot below MP and moving away; -0.5 low IV (20.8%) suggests some complacency

Watch next session: $640 PUT OI (144K) for defense; Spot vs $657 Max Pain pin; Any call flow to challenge $650-$654 put walls

Flow Summary

Net premium: -$1.92B bearish

P/C volume ratio: 1.14 — put-dominant

P/C OI ratio: 1.92 — extreme put lean in positioning

Aggressive put premium buying dominates, creating a massive negative net premium. The flow is bearish and defensive, with positioning heavily skewed to puts. The market is paying significant premiums for downside protection near-term, overriding typical max pain pin mechanics.

Notable Prints

SPY 3/26 $652 Call

Vol: 364,043

OI: 2,136

Vol/OI: 170.4x

IV: 9.6%

Notional: ~$25.4M (Premium Flow)

Intent: Short call (sold) as part of a bear call spread or covered write

Dual read: Sold (bearish/neutral) or bought (bullish breakout)

Read-through: Given the massive negative net premium at this strike (-$240M), this is almost certainly a short call. Sellers are collecting premium, capping upside near $652. The high volume vs. OI suggests new positioning, not just rolling.

SPY 3/26 $649 Put

Vol: 277,611

OI: 3,326

Vol/OI: 83.5x

IV: 0.0%

Notional: ~$131.3M (Premium Flow)

Intent: Long put (bought) for downside protection or delta-hedging

Dual read: Bought (bearish) or sold (bullish)

Read-through: Zero IV indicates these are deep ITM puts, likely bought for delta-hedging or protective purposes. This is a large, direct bearish bet or hedge just $4 below spot, representing significant premium paid for protection.

SPY 3/26 $650 Call

Vol: 290,640

OI: 2,104

Vol/OI: 138.1x

IV: 7.6%

Notional: ~$20.98M (Premium Flow)

Intent: Short call (sold) for premium income

Dual read: Sold (bearish/neutral) or bought (bullish)

Read-through: Another major premium seller strike. Net premium of -$205.9M confirms heavy short call flow, creating a layered resistance wall at $650 alongside $652.

SPY 3/26 $654 Call

Vol: 238,305

OI: 1,540

Vol/OI: 154.7x

IV: 11.9%

Notional: ~$15.38M (Premium Flow)

Intent: Short call (sold) as part of a bear call spread or covered write

Dual read: Sold (bearish/neutral) or bought (bullish)

Read-through: Net premium of -$192.8M confirms selling. This establishes another cap just above spot, part of a layered resistance from $649-$654 constructed via premium selling.

SPY 3/26 $651 Call

Vol: 292,179

OI: 750

Vol/OI: 389.6x

IV: 8.9%

Notional: ~$20.98M (Premium Flow)

Intent: Short call (sold), likely closing or rolling

Dual read: Sold (bearish/neutral) or bought (bullish)

Read-through: Extremely high volume vs. low OI suggests this is trade closure or rolling. The negative net premium (-$205.9M) points to selling, reinforcing the bearish flow theme of call supply.

Institutional Positioning

Call additions: Minimal. Any call flow is heavily net sold, as seen in premium data at strikes $650-$654.

Put additions: Significant protective/long put buying at $649 (ITM) and massive OTM put OI concentrated at $535 (203K), $540 (154K), $630 (152K).

GEX/DEX consistency: Yes — strongly aligned. Negative GEX (-$3.1B) is pro-cyclical (trending regime), meaning dealers are short gamma and will amplify moves. This aligns perfectly with bearish flow and put buying.

OI clusters: Major PUT walls at $535 (203K OI), $540 (154K), $630 (152K). Major CALL walls at $650-$654 (constructed via premium selling). The $640 put also has 144K OI.

Hedging evidence: Clear and layered. Large ITM put buying at $649 for near-term protection, and massive OI in far OTM puts ($535-$540) suggests longer-term tail risk hedging. This is a defensive institutional posture.

Max pain context: Max Pain at $657, spot at $645.17 (1.8% below). Spot is being pulled *away* from max pain, suggesting strong directional selling pressure and put buying are overriding typical pin mechanics.

Signal vs Noise

~High-volume, low-IV (0%) $649 Puts are ITM hedging/position closing, not a new directional signal, but they confirm large bearish delta.

~Massive volume in 3/26 weekly calls (e.g., $648C 294K vol) is likely short covering or MM delta-hedging against the put flow, not bullish initiation.

~The $460 and $465 Call premium is from far OTM, low-dollar calls—likely lottery tickets or spread legs, not meaningful directional bets for near-term price action.

~$549 Call premium is also far OTM and not relevant to near-term price action.

Key Conclusions

🐻Net premium flow overwhelmingly bearish (-$1.9B), dominated by put buying/call selling

⚡Negative GEX (-$3.1B) in trending regime will amplify any downward move

🧱Call walls at $650-$654 from premium selling cap near-term rallies

📍Spot below max pain ($645 vs $657) but moving away, suggesting strong directional bearish force overriding pin

Read the Flow analysis for SPY for 2026-03-26. This AI-generated report covers regime classification, key price levels, strategy recommendations, and actionable trade ideas drawn from end-of-day options data including gamma exposure, delta exposure, and implied volatility.