AI Stock Selloff Triggers Margin Calls as Goldman Sachs and JPMorgan Demand Collateral from Hedge Funds
Miles Bennett
As AI stocks plunged, Goldman Sachs and JPMorgan issued margin calls to multiple hedge funds in recent weeks; fund leverage had already hit its largest increase since Goldman began tracking the data in 2016, and market concentration now exceeds dot-com-bubble levels.
What exactly are these margin calls?
Wall Street banks told hedge funds with heavily concentrated positions in specific sectors to post additional collateral or reduce leverage.
Most calls were triggered automatically by market volatility — a standard clause written into prime-brokerage agreements.
This means → the banks did not decide to act; the sell-off itself crossed pre-set thresholds, and the system fired.
How much leverage had funds built up?
Goldman reported that the cumulative rise in total hedge-fund leverage over the first five months of this year was the largest single increase since it began tracking the metric in 2016.
In plain terms = funds had pushed borrowed-money bets to a historical extreme before the sell-off arrived.
This reflects an almost unguarded conviction in AI during the first half — the higher the leverage, the more violent the unwind.
How severe is this sell-off?
The Nasdaq 100 briefly entered correction territory intraday, falling 10% from its early-June record.
SanDisk and Intel dropped 53% and 39% from their respective peaks; the Philadelphia Semiconductor Index has fallen roughly 25% since late June.
Goldman data showed long-short funds down 1.3% and multi-strategy funds down 1.7% on the day — the last time every strategy fell more than 1% in a single session was during the 2020 Covid crash.
How concentrated is the risk?
Capital Group data shows the top ten S&P 500 constituents now account for roughly 40% of the index's total market cap — exceeding early-2000s dot-com-bubble levels.
This means → the market's eggs are packed into fewer baskets than twenty years ago; when the leaders fall, the index drag is amplified.
How exposed are the banks themselves?
Goldman disclosed that as of June 30, about 16% of its prime-brokerage book was directly exposed to AI-linked storage stocks.
In plain terms = the banks are not just calling clients for cash — they have real money riding on the same AI trade.
If the AI sector continues to slide, the banks' own exposure widens in tandem, and whether margin-call pressure stops here remains an open question.
Content is for reference only, not financial advice.