Bitcoin obtained hit exhausting on Feb. 5 (down 13.2%), and Jeff Park’s take is fairly blunt: this didn’t appear like a crypto headline. It appeared extra like tradfi plumbing: margin, derivatives, and ETF mechanics, operating via spot Bitcoin ETFs, with BlackRock’s IBIT proper within the center. Right here’s the odd half: flows didn’t present the massive redemptions you’d usually count on on a day like that.
Why Did Bitcoin Crash On Feb. 5?
Park begins with the ETF tape in his X publish from Feb. 7. IBIT, he stated, did report quantity—“2x the prior excessive, 10B+”—and choices have been going nuts too, with contract counts at launch-era highs. And in contrast to prior spikes in choices curiosity, he says this one leaned put-heavy, based mostly on a transparent quantity imbalance.
That timing issues. It landed proper as markets have been going risk-off throughout the board. Park cited Goldman’s prime brokerage desk calling Feb. 4 one of many worst every day efficiency occasions for multi-strat funds, round a 3.5 z-score—mainly a “0.05% occasion” in his framing. When that occurs, pod-shop danger managers step in and inform everybody the identical factor: lower gross, quick. Park frames Feb. 5 because the second leg of that pressured deleveraging.
However the move information didn’t line up with the apparent story. He factors to prior IBIT drawdowns the place you probably did see actual redemptions: Jan. 30’s roughly $530 million of web outflows after a 5.8% down day, and Feb. 4’s roughly $370 million in the course of the shedding streak. On a -13% day, you’d suppose you’d see $500M–$1B of outflows. He didn’t.
As an alternative, Park factors to web creations: about 6 million new IBIT shares created, including roughly $230 million in AUM. And the remainder of the spot Bitcoin ETF advanced was web constructive too—$300M+. “That may be a little perplexing,” he wrote. His level: it in all probability wasn’t one factor.
Deleveraging First, Then Brief-Gamma Mechanics
His most important declare: the set off wasn’t crypto-native. “The catalyst to the unload was that there was a broad based mostly deleveraging throughout multi-asset funds/portfolios as a result of excessive draw back correlation of danger belongings reaching statistically anomalous ranges,” he wrote. In his view, that set off violent de-risking that included Bitcoin, even when a variety of the publicity was supposedly “delta impartial”: foundation trades, RV versus crypto equities, and different setups that field delta throughout sellers.
After that, the hedging mechanics took over. “This deleveraging then triggered some quick gamma to come back into impact that compounded to the draw back,” he wrote, mainly saying sellers needed to promote IBIT as their hedges up to date. And since it occurred so quick, he thinks market makers ended up web quick Bitcoin with out actually managing stock the “regular” manner. That may mute what you’d in any other case see as large ETF outflows on the tape.
He additionally notes how intently IBIT tracked software program equities and different danger belongings within the weeks main into the drop. In his framing, the software-led selloff is the cleaner spark right here: gold issues, positive, however it’s much less central to the funded multi-strat trades he’s speaking about.
One exhausting datapoint he leans on is the CME foundation. Utilizing a dataset he attributed to Anchorage Digital Head of Analysis David Lawant, Park stated the near-dated CME BTC foundation jumped from 3.3% on Feb. 5 to 9% on Feb. 6—an unusually large transfer because the ETF launch. He reads that as a pressured unwind of the premise commerce by giant multi-strat outlets (promote spot, purchase futures).
As additional gas, he brings up structured merchandise: knock-ins and barrier ranges. Not essentially the driving force, however one thing that may make a quick transfer nastier. He referenced a JPM word priced in November with a barrier “proper at 43.6,” and argued that if related notes have been printed later as BTC slid, boundaries may cluster round “38–39.”
That’s the type of zone the place a quick selloff can flip hedging right into a cascade. If boundaries break, unfavorable vanna and rapidly altering gamma can pressure sellers to promote exhausting into weak point. He additionally notes implied vol almost touching 90% in his description.
Why Bitcoin Snapped Again On Feb. 6
Park frames Feb. 6’s “heroic 10%+ restoration” as a positioning reset. CME open curiosity expanded quicker than Binance’s. He says CME OI collapsed from Feb. 4 to Feb. 5 (supporting the basis-unwind concept), then recovered as gamers leaned again into relative-value setups.
In his telling, ETF creates/redeems can look flat-ish if the premise commerce is being rebuilt, even when value stays heavy as a result of crypto-native leverage and short-gamma exposures—usually on offshore venues—are nonetheless clearing out.
Backside line, in his view: this may occasionally not have been “basic” in any respect. It was technical plumbing: multi-asset de-risking, then derivatives suggestions loops making it worse. If ETF inflows preserve coming with no matching growth within the foundation commerce, he implies, that’s the cleaner sign of actual demand, much less seller recycling, extra sticky consumers.
At press time, BTC traded at $70,649.

Featured picture created with DALL.E, chart from TradingView.com
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