Hudson Bay Capital Management LP
SEC Form 13F institutional filer · CIK 0001393825
13F-HR · 226 reported holdings · 2026-03-31
Hedge fund manager.
Reported long-US-equity value
$9.49B
Top-10 concentration
49.9%
Hudson Bay Capital Management LP — $9.49B AUM allocation strategy
Hudson Bay Capital Management LP files SEC Form 13F and reports $9.49B of long US equity value across 226 reported holdings for 2026-03-31.
Its largest sector bet is Information Technology 32.5%, followed by Consumer Discretionary 13.9% and Communication Services 7.1%.
The top 10 holdings account for 50% of reported value — a broadly spread portfolio. The sector and industry splits below are of the same reported value. Track quarter-over-quarter adds, trims, new positions and exits below — sourced from SEC 13F filings, public domain.
Hudson Bay Capital Management LP — latest SEC 13F insights
Reported long-US-equity value (13F AUM)
$9.49B
total across 226 reported holdings · 2026-03-31 · excludes shorts, cash, non-US
Top-10 concentration
50% of value
higher = narrower conviction; lower = spread / hedging
Biggest adds (shares)
+$WBD +4.75M sh · +$130M+$KVUE +2.81M sh · +$48.3M+$KIM +1.15M sh · +$26.5M
Biggest trims (shares)
−$WMT −1.06M sh · −$117M−$VRT −957K sh · −$154M−$BAC −870K sh · −$6.77M
Exited to nil (held last quarter, gone now)
$NOW ($71.2M last qtr)$PYPL ($69.9M last qtr)$CNC ($66.9M last qtr)$GS ($53.2M last qtr)$MAA ($35.2M last qtr)
Sector allocation (share of reported value)
each slice is a share of the reported long-US-equity value — smaller sectors and the rest of the book roll into “Other holdings”
Qtr shift = share-point change vs the prior quarter's filing — first period tracked for this filer; the column fills in with the next quarterly refresh.
Industry allocation (share of reported value)
- Semiconductors16.5%—
- Automobile Manufacturers7.5%—
- Application Software6.7%—
- Broadline Retail6.5%—
- Movies & Entertainment5.7%—
- Technology Hardware, Storage & Peripherals5.5%—
- Multi-Sector Holdings3.9%—
- Systems Software2.9%—
- Other holdings44.9%—
the finer GICS cut of the same book — same denominator — smaller industries roll into “Other holdings”
Qtr shift = share-point change vs the prior quarter's filing — first period tracked for this filer; the column fills in with the next quarterly refresh.
Top S&P 500 holdings
10 of 10 rows · sorted by Value ↓
| Ticker | Holding | Shares | Value | Δ QoQ | Weight |
|---|---|---|---|---|---|
| $NVDA | NVIDIA Corporation | 5.22M | $910M | -369K | 9.6% |
| $TSLA | Tesla Inc | 1.9M | $705M | +85.1K | 7.4% |
| $AMZN | Amazon.com Inc | 2.95M | $615M | +341K | 6.5% |
| $AAPL | Apple Inc | 2.04M | $518M | +848K | 5.5% |
| $NFLX | Netflix Inc | 4.58M | $440M | +830K | 4.6% |
| $PLTR | Palantir Technologies Inc | 2.71M | $396M | +153K | 4.2% |
| $BRK.B | Berkshire Hathaway Inc.-Class B | 765K | $367M | +160K | 3.9% |
| $AMD | Advanced Micro Devices Inc | 1.62M | $330M | -727K | 3.5% |
| $MSFT | Microsoft Corporation | 729K | $270M | -106K | 2.8% |
| $UNH | UnitedHealth Group Incorporated | 700K | $189M | — | 2.0% |
…and 216 more holdings in the full 13F filing (top positions only shown).
SEC Form 13F data sets · public domain · 45-day filing lag · >$100M AUM managers · as reported
← All 13F filers·← QuantOrb.pro
How to read Δ QoQ — the five insight categories, and the caveats
The categories. Analysts, quants and retail traders look past total portfolio value to isolate actionable signals. Five categories matter.
Conviction & concentration shifts
New positions vs complete exits — a brand-new stock signals high conviction; a full liquidation suggests a broken thesis or tax-loss harvesting. Aggressive sizing — look at share count, not dollars: a 20% share increase during a drawdown is strong dip-buying. Concentration — a narrowing top-5/10 means conviction; spreading capital across more names means hedging.
Sector & macro allocation rotations
Aggregating Δ QoQ moves across sectors shows where smart money is leaning in or sneaking out — rotating out of growth into defensives or energy, for example. The fund's total long equity exposure quarter-over-quarter is a proxy for overall institutional risk appetite.
Crowding & smart-money consensus
When several managers initiate or expand the same stock in the same quarter, that is institutional consensus. Contrarian reads: top pickers buying hard into a beaten-down name the market is selling.
Derivative & option overlays
Reported call/put changes indicate whether managers are adding downside hedges or leveraging upside exposure. Note: a long increase may be half of a market-neutral pair trade.
Who reads this
| Retail "cloners" | High-conviction ideas to replicate ~45 days after quarter-end. |
| Corporate IR | Which funds bought or dumped the stock, before the next call. |
| Quant / algo traders | Cross-sectional factor inputs: flow, momentum, ownership. |
Four caveats before you trade on it
- 45-day lag — holdings are quarter-end; positions may already be closed.
- Long-only — 13Fs miss shorts, pair trades and cash.
- No non-US / fixed income — the picture is US equities plus options.
- Corporate actions — splits and spinoffs distort raw share deltas.
Newsletter signup
Free subscription. Daily trading day morning dispatch. No spam.