AZTMM Weekly Pulse · Week of Monday 18 May — Friday 22 May 2026
The week in numbers
| Index | Mon open | Fri close | Week change | Week range |
|---|---|---|---|---|
| SPY | $739.83 | $745.64 | +0.78% / +0.88% vs 5/15 close | $733.39 – $748.94 |
| QQQ | $711.54 | $717.54 | +0.84% / +1.04% vs 5/15 close | $698.85 – $719.00 |
| VIX | 19.25 | 16.70 | −13.2% / −9.4% vs 5/15 close | 16.46 – 19.44 |
| NVDA | $220.50 | $215.33 | −2.3% / −3.6% vs 5/15 close | $215 – $227.40 |
What happened
A textbook resilient week. Three catalysts (Monday vol spike, Wednesday FOMC, Wednesday after-hours NVDA earnings) and a -1.78% Thursday session in the largest single-name weight in QQQ. The indices closed Friday at week highs anyway. That’s the story.
The narrative ran in three acts. Monday opened with VIX at 19.44 and SPY testing $733 — the kind of morning that historically marks weekly lows or weekly capitulation, depending. By close, VIX had collapsed to 17.82 and SPY recovered to $738.65. That set the tone: event vol got demanded, then promptly sold. Wednesday delivered the FOMC + NVDA print double-header. FOMC was a non-event, NVDA printed in-line, and the indices closed Wednesday at session highs. Thursday brought the NVDA reaction — stock down 1.78% on heavy bearish premium flow ($188M net negative) — but the rest of the QQQ picked up the slack and the index closed +0.14%. Friday was the quiet send-off: tight range, VIX broke 17, SPY closed at week highs.
Flow themes
- Buyer-led across the board. Market-wide P/C ranged 0.64–0.96 every session this week. Call premium dominated put premium 2x or better on three of five days. That’s not how rolling tops look.
- VIX regime shift. 19.44 high Monday, 16.46 low Friday — a 15.5% range from peak to trough on a week with no actual sell-off. Vol of vol got crushed. Next-week base case sets up with sub-17 VIX.
- MU dark-pool accumulation. Four sessions of large off-exchange prints this week and last: $479M on 5/13, $440M on 5/15, $199M on 5/20, plus follow-on activity. Stock down through the accumulation — classic institutional buying-on-weakness pattern. This is now a Tier-1 watch.
- NVDA post-print rotation. Pre-print buyers in July $230C and June $220C are under water by ~$15. If those positions unwind next week, that’s incremental selling NVDA doesn’t need. Watch $215.
- Friday divergence flag. SPY closed +0.39% but net premium printed -$86M (first negative-net SPY session of the week). Single data point, but worth marking. Two consecutive negative-net sessions with the tape up = late-cycle distribution signal.
Big blocks of the week
| Day | Ticker | Block size | Print level | Read |
|---|---|---|---|---|
| Mon 5/18 | MU | $440M | $734 | 2nd large MU print in 3 sessions |
| Mon 5/18 | CSCO | $176M | $117.35 | Single large block, watch for follow-on |
| Mon 5/18 | AMZN | $148M | $267 zone | Continuation of multi-week pattern |
| Wed 5/20 | MU | $199M | $724 | 3rd large MU print in 8 sessions |
| Wed 5/20 | APLD | $117M | $38.66 | Proportionally enormous for the name |
| Wed 5/20 | AMZN | $140M+ | $267 zone | Stacking trade ongoing |
What we’re watching into next week
- SPY $740 floor / $750 ceiling. Friday closed $745.64, the middle of that range. Tuesday’s open tells you the bias.
- NVDA $215 line. Friday’s close. A break = post-earnings unwind continues, with $210 as next zone. A bid = base is in.
- VIX sub-17. First close below 17 in two weeks. Sustained sub-17 = the late-Q2 vol floor is set. A pop back above 18 means Friday was a head-fake.
- MU continuation. Four large dark-pool prints inside 10 sessions. A fifth in the $720–$740 zone next week = high-conviction accumulation setup.
- SPY net premium. Friday’s -$86M was the first negative session of the week. If next Monday/Tuesday repeat the pattern with the tape still bid, that’s distribution under cover of an up move.
- Watch for the Tuesday MU print. 5/27 is the next normal trading day (Memorial Day on Monday 5/26). If MU prints another block on Tuesday, that’s five sessions in a stacking pattern.
Names on our radar
| Ticker | Week signal | Read |
|---|---|---|
| SPY | +0.88% week, VIX -9.4%, Fri net -$86M | Tape bid, marginal flow flipping |
| QQQ | +1.04% week despite NVDA -3.6% | Breadth carried the index |
| NVDA | -3.6% week, post-print sellers, $215 line | Rotation OUT continuing |
| MU | $199M + $440M + $479M (last 8 sessions) | Tier-1 institutional accumulation |
| APLD | $117M dark-pool print 5/20 | Watch for follow-on next week |
| AMZN | Multi-week off-exchange stacking $267 | Pattern intact |
| TSLA | Multiple Jun-5 $420C sweeps | Short-dated directional positioning |
| AMD | $2.3M Jun-18 $400P sweep 5/21 | Hedge or fade; watch $425 |
| ASTS | $3.4M Aug $150C ascending fills | High-conviction long |
| GOOG | Mar-2027 $340C LEAPS — $864K 5/21 | Long-dated bullish positioning |
The set-up
A week that should have been worse. Three catalysts, a major single-name reaction, a vol spike Monday — and the indices closed at week highs with VIX broken below 17. The friction is now showing in two places: SPY net premium flipped negative Friday for the first time this week, and NVDA refuses to find a bid post-print. Neither is a red flag yet; both go on the watch list.
Memorial Day takes Monday off. The next trading session is Tuesday 5/27 — a short week with four sessions. Base case heading in: the bid holds unless SPY closes below $740 with VIX back above 18. The single-name asymmetry continues to be where the work is — NVDA at the $215 line, MU continuation, the dark-pool stackers in APLD and AMZN.
Method note
The Weekly Pulse aggregates the full week’s options flow, dark-pool prints, and volatility data, applies our internal filters and conviction model, and surfaces only what cleared our thresholds across the five-session window. Specific model weights, lookback windows, and signal-construction methodology are proprietary. 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.
This is research, not advice. Position sizing, risk management, and exit discipline are yours.