27 July 2026 — EOD read. Monday was a single-stock storm inside a becalmed market: NVDA lost five percent while the index pair barely moved, and the options tape spent the session buying the dip in one place and stacking earnings-dated protection in another. Here is what printed and how we read it.
- NVDA fell 4.99%; the indices barely moved — SPY +0.02%, QQQ -0.31% off a $675.95 low.
- Flow bought the dip in index and NVDA calls while AMD drew ~$9M of earnings-dated puts.
- Friday’s $32.7M NBIS put block confirmed real — roughly 61% became new open interest overnight.
What happened
NVDA opened at $208.20, printed its high in the first minutes, and never looked back — down 4.99% to $196.51, a $195.44 low, on put volume roughly 61% above its 30-day average and about -$48.6M of net options premium. The indices absorbed it. SPY traded an outside session — a $745.53 high above Friday’s high and a $735.87 low below Friday’s low — and closed at $739.09, up 0.02%. QQQ opened higher at $691.68, slid nearly 16 points to $675.95, then recovered six of them to finish at $682.12, down 0.31%. That close sits under Friday’s $682.48 low — the lower-low marker we flagged in Friday’s post printed. VIX spiked to 19.93 intraday, through Friday’s 19.05 ceiling, and gave all of it back to close at 18.67.
Market-wide, 36.8M calls traded against 30.0M puts — a 0.82 put/call — with put premium at $19.4B against $18.0B in calls. The two index ETFs split: SPY ran puts over calls at 1.09, while QQQ flipped to 0.95 — more calls than puts, against Friday’s 1.18 — and SPY’s net options premium swung positive to +$43.8M while QQQ’s narrowed to -$7.6M. NVDA’s implied-vol rank jumped to 63 from 46 in a session.
Yesterday’s radar — OI confirm
Yesterday’s flagged prints, checked against this morning’s open-interest update — the tape’s own answer to whether the flow was real positioning. Thresholds: ≥40% of flagged volume became new OI = confirmed; 10–40% = partial; under 10% = not confirmed.
| Contract | Flagged | OI change overnight | Verdict |
|---|---|---|---|
| NBIS Aug 7 $170 puts | 31,376 contracts, $49.0M | +19,087 (1,564 → 20,651) | Confirmed opening — ~61% became new OI; the floor block was real |
| NBIS July 31 $170 puts | 26,583 contracts, $20.7M | +5,100 (22,044 → 27,144) | Partially confirmed — ~19% |
| MU Aug 7 $800 puts | 17,505 contracts, $54.7M | +14,708 (2,185 → 16,893) | Confirmed opening — ~84% became new OI |
| MU Aug 21 $930 puts | 317 contracts, $3.1M | +88 (1,916 → 2,004) | Partially confirmed — ~28% |
| QQQ July 31 $700 calls | 20,556 contracts, $9.2M | +3,211 (5,210 → 8,421) | Partially confirmed — ~16% |
| SPX Aug 21 7,500 puts | 587 contracts, $9.1M | -188 (39,530 → 39,342) | Not confirmed — OI fell; the shelf did not grow |
| SPXW July 31 7,220 puts | 5,243 contracts, $8.6M | +1,897 (603 → 2,500) | Partially confirmed — ~36% |
| POWL Feb ’27 $230 calls | 1,527 contracts, $9.4M | -710 (1,604 → 894) | Not confirmed — OI fell; the floor print reads as a close, not an opening |
| ORCL July 31 $120 puts | 4,384 contracts, $3.0M | +484 (11,497 → 11,981) | Partially confirmed — ~11% |
The single-name insurance was real — the NBIS block and the MU $800s opened and held — while the index-level prints mostly washed out and the POWL floor turned out to be an exit rather than an entry.
Why it matters
Monday drew its line between one stock and the market. NVDA repriced hard, but SPY closed an outside day flat, QQQ recovered six points off its low, and the VIX spike through 19 lasted hours, not the session. The derivatives tape leaned the same way: QQQ ran more calls than puts for the first time in days, $3.9M of at-the-money July 31 $680 calls took the offer at roughly 5x open interest, and $2.3M of NVDA $197.5 calls swept ask-side at 22x open interest into the slide. Our read: the tape treated the NVDA move as a repricing of one name, not a regime event — and the vol market’s round trip is the dominant tell.
The confirm loop earned its keep this morning. Friday’s open question was whether the $32.7M NBIS floor block was real positioning — it was: roughly 61% of the flagged volume became new open interest, and the $170 strike now carries 20,651 contracts against a $187.88 close with the report due 8/6. AMD is printing the same shape next: about $9.1M of in-the-money Aug 28 $515 puts accumulated in four waves ahead of its 8/4 report. The off-exchange tape put the day’s theme in size after the bell — SOXX $111.3M and SMH $75.6M were the two largest non-index prints — while SPY ($146.4M) and QQQ ($85.3M) marked exactly at their closing prices.
What to watch into Tuesday
- NVDA $195.44 — Monday’s low, and the level to watch. A close below would extend the slide to a third straight red session; $206.84, Friday’s close, is the reference for a full retrace.
- QQQ $675.95 — Monday’s low. The close at $682.12 sits under Friday’s $682.48 low, so the lower-low marker printed; $684.23, Friday’s close, is the reference on the other side.
- SPY $745.53 / $735.87 — Monday’s outside range swallowed both of Friday’s extremes; a close beyond either edge would resolve what Monday left unresolved.
- VIX 19.05–19.93 — the intraday tape keeps probing above 19 and closing back under it; a close above 19.05 would mark the break the spikes have so far failed to hold.
- AMD $515 strike — the week’s heaviest single-name put accumulation sits there ahead of the 8/4 report; Tuesday morning’s open-interest update shows whether Monday’s $9.1M opened.
- GLW reports Tuesday premarket — Monday’s $1.5M of Jun ’27 $180 call prints went up bid-side the day before; the ledger scores them either way.
Names on our radar
Every row below is frozen at publication and scored mechanically in the Accountability Ledger at +5 and +21 sessions — misses stay on the page. Options prints are checked against the next morning’s open-interest update in the following session’s post.
| Ticker | What printed | Read |
|---|---|---|
| NVDA | -4.99% to $196.51; $2.3M in July 31 $197.5 calls swept ask-side at ~22x open interest; put volume 61% above its 30-day average | The day’s story — dip-facing call prints against a heavy put tape, at the money, dated this week |
| AMD | ~$9.1M in Aug 28 $515 puts across four waves, in the money against a ~$492 stock, a week before the 8/4 report | The same earnings-bracketing shape the tape just confirmed in NBIS; Tuesday’s OI update is the test |
| QQQ | $3.9M in July 31 $680 calls, ask-side at ~5x open interest, struck at the money | Dip-facing prints on the index that flipped to more calls than puts on the day |
| SPX | Sep 18 7,445 straddle prints again — $17.7M combined across both legs | Third session running of the same paired structure at the same strike |
| SPXW | $6.3M in Aug 4 7,250 puts at 8–16x the strike’s open interest | Tail protection ~2.2% below spot, dated one week out |
| SPCX | ~$4.4M of $115 calls spread across Aug, Sep, and Oct expiries ahead of the 8/4 report | Laddered upside interest into an earnings date, stock near $113 |
| TSLA | ~$2.3M of July 29 $307.5 puts hit bids at ~40x open interest; $1.2M of July 31 $310 calls took offers; $71.7M dark-pool block at $309.22 | A two-way tape around a flat stock — near-dated downside sold, near-dated upside bought |
| MU | $1.1M of July 31 $955 puts, bid-side, deep in the money against a $900.20 close | Friday’s Aug 7 $800 puts confirmed ~84% opened this morning; today’s $955 prints hit the bid instead |
| GLW | $1.5M in Jun ’27 $180 calls, mostly bid-side, the day before its premarket report; stock at $143 | Long-dated upside that traded to the bid — the strike was sold, not paid for |
| SOXX / SMH | Dark pool: $111.3M SOXX at $516.23 and $75.6M SMH at $548.55 after the bell | The day’s theme marked in size off-exchange — the two largest non-index prints |
The set-up
The regime classifier still reads Sideways with the MPI at 55, and Monday tested the label harder than the closes suggest: a five-percent repricing in the market’s largest chip name, absorbed by an index tape that finished flat, a vol spike that could not hold 19, and an options tape that bought the dip where it fell and paid for protection where the calendar says risk lives — AMD next week, the same shape the tape just proved real in NBIS. Tuesday’s open-interest update scores Monday’s prints; the Accountability Ledger scores everything else.
Method note
Flow and dark-pool data sourced from Unusual Whales. MPI score and regime classifier are our internal composite; daily synthesis is AI-assisted from those inputs. Volume-over-OI activity is unconfirmed as new positioning until the next morning’s open-interest update; confirmations are published in the following session’s post. Index closes above are Monday’s; the MPI snapshot is keyed to Friday’s close, as the composite updates on a one-session lag.
This is research, not advice. Nothing here is a recommendation to buy, sell, or hold any security.
AZTMM HLDGS LLC is not a registered broker-dealer, investment adviser, or FINRA member. All content is retrospective research published for general circulation — not personalized advice, not trade signals. Options involve substantial risk, including losses that may exceed the initial investment. Full disclaimer.
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