A-Share Leveraged Positions See Fastest Single-Day Reduction Since 2016
Claire Weston
China's A-share margin balance plunged 2.8% in a single day to ¥2.75 trillion last Friday — the sharpest drop since January 2016 — as panic deleveraging spread from overstretched AI stocks across the broader market; state-backed funds stepped in on Monday.
A 2.8% single-day margin drop — how rare is that?
A-share margin financing — money investors borrow from brokers to buy stocks — fell to ¥2.75 trillion (~$405 billion), shedding roughly ¥78 billion in one session.
This means → the last time leverage unwound this fast was the January 2016 circuit-breaker crash, one of the worst episodes in A-share history.
In plain terms = traders who had borrowed to buy stocks rushed for the exit all at once, at a speed only seen during market meltdowns.
What triggered the sell-off?
The immediate cause: AI-linked stocks had rallied too far, too fast, and profit-taking hit hard. The STAR 50 index fell over 7%; the CSI 300 dropped 3.6%.
Bloomberg reported that CXMT Corp.'s upcoming large-scale IPO added pressure, as investors freed up cash ahead of the listing.
This reflects a double squeeze — stretched valuations + a major IPO draining liquidity — rather than any single catalyst.
How did a chip sell-off drag down the whole market?
Memory-chip stocks had drawn heavy margin buying this year, concentrating leverage in one sector.
This means → when chip shares plunged, brokers issued margin calls, forcing investors to sell holdings across other sectors to meet them.
In plain terms = one sector blew up, and investors had to dump unrelated stocks to cover the debt — losses cascaded from chips to the entire market.
State funds stepped in — is the market safe now?
Markets rebounded on Monday. Several state-backed funds announced fresh purchases of A-shares, and the CSRC plans to convene an industry roundtable — a clear policy-support signal.
The key metric to watch is whether the margin balance stabilizes. If leveraged money keeps flowing out, it means investor confidence has not recovered and state buying is only slowing the decline.
This means → the margin-balance readings over the next few trading sessions will tell us more than the index itself about whether this deleveraging wave is truly over.
Content is for reference only, not financial advice.