MILLENNIUM MANAGEMENT LLC
SEC Form 13F institutional filer · CIK 0001273087
13F-HR · 504 reported holdings · 2026-03-31
Hedge fund, multi-strategy.
Reported long-US-equity value
$70.95B
Top-10 concentration
27.3%
MILLENNIUM MANAGEMENT LLC — $71B AUM allocation strategy
MILLENNIUM MANAGEMENT LLC files SEC Form 13F and reports $71B of long US equity value across 504 reported holdings for 2026-03-31.
Its largest sector bet is Information Technology 8.5%, followed by Communication Services 3.3% and Financials 2.9%.
The top 10 holdings account for 27% 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.
MILLENNIUM MANAGEMENT LLC — latest SEC 13F insights
Reported long-US-equity value (13F AUM)
$71B
total across 504 reported holdings · 2026-03-31 · excludes shorts, cash, non-US
Top-10 concentration
27% of value
higher = narrower conviction; lower = spread / hedging
Biggest adds (shares)
+$HBAN +23.6M sh · +$365M+$WBD +18.3M sh · +$468M+$BAC +11.8M sh · +$562M
Biggest trims (shares)
−$WMT −39.8M sh · −$4.42B−$PSKY −7.84M sh · −$108M−$BSX −6.93M sh · −$786M
Exited to nil (held last quarter, gone now)
$RVTY ($90.6M last qtr)$EXR ($51.1M last qtr)$NXPI ($29.7M last qtr)$VTR ($25.1M last qtr)$MPWR ($22.4M 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)
- Semiconductors4.4%—
- Technology Hardware, Storage & Peripherals2.7%—
- Rail Transportation1.8%—
- Broadcasting1.7%—
- Interactive Media & Services1.6%—
- Systems Software1.5%—
- Copper1.0%—
- Diversified Banks1.0%—
- Other holdings84.3%—
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
8 of 8 rows · sorted by Value ↓
| Ticker | Holding | Shares | Value | Δ QoQ | Weight |
|---|---|---|---|---|---|
| $NVDA | NVIDIA Corporation | 10.6M | $1.85B | -4.65M | 2.6% |
| $NSC | Norfolk Southern Corporation | 4.58M | $1.32B | +434K | 1.9% |
| $WBD | Warner Bros. Discovery Inc. Series A | 43.9M | $1.21B | +18.3M | 1.7% |
| $AAPL | Apple Inc | 4.67M | $1.18B | -283K | 1.7% |
| $META | Meta Platforms Inc | 2.09M | $1.16B | +780K | 1.6% |
| $MSFT | Microsoft Corporation | 2.8M | $1.04B | +507K | 1.5% |
| $FCX | Freeport-McMoRan Inc | 12.7M | $745M | -3.27M | 1.0% |
| $SNDK | Sandisk Corporation | 1.14M | $726M | -357K | 1.0% |
…and 496 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.
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