ADAGE CAPITAL PARTNERS GP, L.L.C.
SEC Form 13F institutional filer · CIK 0001165408
13F-HR · 426 reported holdings · 2026-03-31
Hedge fund, known for event-driven strategies.
Reported long-US-equity value
$51.15B
Top-10 concentration
36.0%
ADAGE CAPITAL PARTNERS GP, L.L.C. — $51.2B AUM allocation strategy
ADAGE CAPITAL PARTNERS GP, L.L.C. files SEC Form 13F and reports $51.2B of long US equity value across 426 reported holdings for 2026-03-31.
Its largest sector bet is Information Technology 21.2%, followed by Communication Services 7.5% and Consumer Discretionary 5.5%.
The top 10 holdings account for 36% 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.
ADAGE CAPITAL PARTNERS GP, L.L.C. — latest SEC 13F insights
Reported long-US-equity value (13F AUM)
$51.2B
total across 426 reported holdings · 2026-03-31 · excludes shorts, cash, non-US
Top-10 concentration
36% of value
higher = narrower conviction; lower = spread / hedging
Biggest adds (shares)
+$CSX +3.25M sh · +$152M+$BSX +2.55M sh · +$92.2M+$WBD +2.49M sh · +$63.1M
Biggest trims (shares)
−$DVN −3.62M sh · −$121M−$PFE −1.81M sh · −$43.1M−$AMCR −1.72M sh · −$2.98M
Exited to nil (held last quarter, gone now)
$D ($125M last qtr)$PEG ($72.9M last qtr)$MET ($47.3M last qtr)$SYK ($38.6M last qtr)$CL ($27.3M 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)
- Semiconductors10.0%—
- Interactive Media & Services7.5%—
- Technology Hardware, Storage & Peripherals6.5%—
- Systems Software4.8%—
- Broadline Retail3.7%—
- Pharmaceuticals2.9%—
- Automobile Manufacturers1.8%—
- Integrated Oil & Gas1.7%—
- Other holdings61.1%—
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 | 22.1M | $3.85B | -159K | 7.5% |
| $AAPL | Apple Inc | 13M | $3.31B | -180K | 6.5% |
| $MSFT | Microsoft Corporation | 6.58M | $2.43B | -51.5K | 4.8% |
| $AMZN | Amazon.com Inc | 9.16M | $1.91B | +91.5K | 3.7% |
| $GOOG | Alphabet Inc. Class C Capital Stock | 5.22M | $1.5B | -38.2K | 2.9% |
| $AVGO | Broadcom Inc | 4.11M | $1.27B | -110K | 2.5% |
| $META | Meta Platforms Inc | 2.06M | $1.18B | +42.9K | 2.3% |
| $GOOGL | Alphabet Inc | 4.1M | $1.18B | -74.6K | 2.3% |
| $TSLA | Tesla Inc | 2.41M | $898M | -58.3K | 1.8% |
| $LLY | Eli Lilly and Company | 957K | $880M | +125K | 1.7% |
…and 416 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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