Closing Pulse · Week of May 11–15, 2026 · Full 5-session institutional flow tape
Volatile week with massive institutional dark-pool activity. Tuesday delivered a $4.9B SPY off-exchange dump as the tide troughed −$758M intraday. Wed/Thu recovered. Friday reversed back to bearish into the close. Weekly net call flow barely positive at +$67M cumulative.
5 sessions of true options-flow + dark-pool data. SPY 5-day off-exchange notional: $17.1B. QQQ: $5.0B. Tuesday 5/12 was the institutional dump day — both options tide and dark-pool prints peaked. Friday closed defensive with QQQ June puts dominating the conviction tape.
SPY 5-Day Dark Pool
$17.1B
97 mega-printsQQQ 5-Day Dark Pool
$5.02B
40 mega-prints5-Day Tide SparkbarEOD net call premium · options tape
Visual: bars above the zero line are net-call (bullish flow), below are net-put (bearish flow). Trough/peak times reflect intraday extremes. Tue 5/12 troughed at −$758M mid-session — the week’s most aggressive single-day sell-off.
5-Day Institutional Dark PoolSPY · QQQ · NVDA off-exchange notional + mega-prints
| Session | SPY total | SPY ≥100K | QQQ total | QQQ ≥50K | NVDA total |
|---|---|---|---|---|---|
| Mon 5/11 | $2.01B | 10 | $1.74B | 15 | $25.1M |
| Tue 5/12 ⚠️ | $4.91B | 23 | $880M | 10 | $31.3M |
| Wed 5/13 | $3.68B | 23 | $442M | 3 | $24.7M |
| Thu 5/14 | $3.03B | 19 | $713M | 2 | $22.3M |
| Fri 5/15 | $3.48B | 22 | $1.25B | 10 | $26.3M |
| 5-day total | $17.12B | 97 | $5.02B | 40 | $129.7M |
Mega-prints = single dark-pool transactions of ≥100K shares (SPY) or ≥50K shares (QQQ). NVDA dark pool stayed flat ($22-31M/day, zero mega-prints) — institutions are not yet concentrated into the May 20–21 earnings print.
Tuesday 5/12 Deep-DiveThe session that defined the week
Tuesday delivered the week’s signature event: a $4.91B SPY off-exchange notional dump — more than double Monday’s volume and matched by 23 mega-prints (single transactions of 100,000+ shares). The options tape troughed at −$758M net call premium at 2:55 PM ET, then bled into a −$486M EOD close. No single catalyst — this was institutional repositioning at scale.
For context: SPY 5-day dark-pool notional is $17.1B; Tuesday alone was 29% of the entire week’s flow. When a single session captures that share of weekly institutional volume, it’s worth tracking whether the repositioning was protective (hedging into NVDA + FOMC) or directional (early de-risking ahead of binary catalysts).
Wed/Thu staged a recovery on the tide (+$437M / +$311M EOD), but SPY dark-pool stayed elevated through both ($3.7B / $3.0B). Friday’s close (−$472M tide, $3.5B dark pool, 22 mega-prints) suggests Tuesday’s repositioning theme is still alive going into next week.
Three QuestionsWhat · Why · What’s next
What happened?
Five sessions of true tape volatility with massive institutional dark-pool activity underlying every day. Monday opened bullish (+$277M tide, $2.0B SPY DP, $1.7B QQQ DP — QQQ-led tech positioning). Tuesday flipped hard bearish (−$486M tide, intraday trough −$758M; $4.9B SPY DP with 23 mega-prints — institutional dump day). Wed/Thu staged a clean recovery on the tide (+$437M, +$311M) but SPY dark-pool stayed elevated. Friday reversed back to bearish (−$472M tide closing into 5:55 PM ET low; $3.5B SPY DP + $1.25B QQQ DP + Friday’s flow alerts dominated by QQQ June-expiry puts). Weekly cumulative tide: +$67M (barely positive). MPI closed 57 (Bull · early, 85% CI).
Why does it matter?
The composite regime model says Bull, but the weekly tape says volatile-with-institutional-defensive-positioning. SPY dark-pool ran $17.1B across 5 sessions — that’s not a quiet week, that’s institutional repositioning at scale. Tuesday’s $4.9B single-day SPY dump + the persistent elevated mega-print activity Wed/Thu/Fri ($3.0–3.7B/day, 19–22 mega-prints) signal large funds were active throughout the week, not just on the down days. Friday’s flow-alert tape — 7 of top 8 single-name alerts were QQQ puts for June expiry — confirms the defensive theme. When regime and tape diverge, tape is leading and regime is lagging.
What to watch next?
Three things. First, NVDA dark-pool concentration. NVDA off-exchange flow has been flat ($22-31M/day, zero mega-prints) all week — institutions are NOT yet positioning into the May 20-21 earnings print. If NVDA dark-pool spikes early next week, that’s the catalyst signal. Second, whether the QQQ defensive put bid persists or expands — Friday’s QQQ June-expiry put concentration at $680/$665/$650 strikes is the cleanest directional read on the tape. Third, SPY dark-pool day-1 trajectory: if Monday opens with another $3B+ session, the institutional repositioning theme is extending; if it drops to $1.5-2B, Tuesday was a one-off.
Friday Sector TapeEOD options flow, all 11 SPDR sectors + SPY
| ETF · Sector | Day % | Call prem | Put prem | Net |
|---|---|---|---|---|
| SPY S&P 500 broad | −0.35% | $1.55B | $1.17B | +$375.7M |
| XLE Energy | +1.26% | $19.4M | $9.6M | +$9.8M |
| XLK Technology | +0.03% | $11.9M | $4.0M | +$7.9M |
| XLY Consumer Discretionary | −0.66% | $0.8M | $0.5M | +$0.3M |
| XLP Consumer Staples | −1.04% | $1.0M | $0.8M | +$0.2M |
| XLC Communication Services | −0.71% | $0.2M | $0.0M | +$0.1M |
| XLRE Real Estate | −1.32% | $0.1M | $0.0M | +$0.1M |
| XLV Health Care | −1.13% | $1.9M | $2.1M | −$0.2M |
| XLU Utilities | −1.88% | $2.4M | $3.0M | −$0.6M |
| XLB Materials | −1.39% | $0.4M | $1.2M | −$0.9M |
| XLF Financials | −0.43% | $6.0M | $14.7M | −$8.6M |
| XLI Industrials | −0.81% | $1.3M | $13.0M | −$11.7M |
Only XLE Energy finished green on price (+1.26%); XLK Technology held flat (+0.03%). Industrials and Financials ran net-put on the options tape, consistent with the broader bearish session shape.
Friday’s Flow-Alert TapeTop single-name conviction tells
Friday’s single-name conviction tape was almost entirely QQQ puts. Top alerts ranked by total ask-side premium: QQQ $680 put expiring 2026-06-30 ($3.1M ask), QQQ $665 put 2026-07-17 ($1.9M), QQQ $700 call 2026-06-12 ($1.2M, the lone call), QQQ $650 put 2026-06-18 ($0.7M), QQQ $710 put 2026-05-29 ($0.7M), QQQ $705 put 2026-05-29 ($0.4M), plus an SPY $735 put 2026-05-29 ($0.3M). The pattern reads as institutional protection-buying or long-put exposure ahead of NVDA earnings + FOMC minutes (both fall inside the June put window). Not a single high-conviction call alert on the tape Friday.
What ChangedWeek-over-week
- ▲5-day net call premium cumulative +$67M — barely positive. 3 bull days (Mon/Wed/Thu) vs 2 bear days (Tue/Fri).
- ▼Tuesday 5/12 was the week’s signature session: tide EOD −$486M, intraday trough −$758M @ 2:55 PM ET, plus $4.91B SPY dark-pool with 23 mega-prints (29% of the entire week’s SPY off-exchange flow).
- ▲Wed/Thu staged a clean tide recovery (+$437M, +$311M), but SPY dark-pool stayed elevated ($3.7B, $3.0B) — institutional repositioning continued under the surface.
- ▼Friday 5/15 reversed to bearish: tide −$472M with the low printed at 5:55 PM ET (into-the-close hedging), SPY dark-pool $3.5B + QQQ dark-pool $1.25B both elevated.
- ●Weekly institutional dark-pool: SPY $17.1B / 97 mega-prints, QQQ $5.0B / 40 mega-prints. Not a quiet week — major repositioning underlying every session.
- ●NVDA dark-pool stayed flat all week ($22-31M/day, zero mega-prints). Institutions have NOT yet concentrated into the May 20-21 earnings print.
- ●Friday flow-alert tape: dominated by QQQ defensive puts for June expiry. 7 of top 8 single-name conviction alerts were puts.
Next Week’s CatalystsReal economic calendar
Thursday May 21 — Heavy macro day. Initial jobless claims (12:30 UTC), Housing starts + Building permits (12:30 UTC), Philadelphia Fed manufacturing survey (12:30 UTC, prev 26.7), S&P flash U.S. manufacturing PMI + services PMI (13:45 UTC, prev 54.5 / 51.0).
Friday May 22 — Leading economic indicators (14:00 UTC, prev −0.6%), Consumer sentiment final (14:00 UTC, prev 49.2).
NVDA earnings — expected May 20–21 after the close. Sits inside the QQQ June-expiry put concentration accumulated Friday. NVDA dark-pool has been flat — first concentration spike is the early signal.
FOMC May minutes — May 21–22. Volatility risk, not direction. Watch VIX response over the print.
The signal-to-watch: if Monday opens with another $3B+ SPY dark-pool session, the institutional repositioning theme from Tuesday is extending. If it drops to $1.5-2B with positive tide, Tuesday was a one-off and bull regime stays intact.
Data Quality & MethodologyOpen by design
Method note
Flow and dark-pool data sourced from our analytical pipeline. MPI score and regime classifier are our internal composite; daily synthesis is AI-assisted from those inputs.