Ken Griffin Citadel Advisors
Ken Griffin founded Citadel, one of the world’s largest and most successful hedge funds. Starting his trading career from his Harvard dorm room at a young age, Griffin quickly developed a keen sense for markets and built Citadel into a global powerhouse with billions in assets under management. Known for his quantitative and technology-driven strategies, Griffin has also made headlines for significant philanthropic contributions, supporting causes in education, the arts, and public institutions. Over the years, he has earned recognition as one of the preeminent figures in modern finance.
Top Buys
| Rank | Stock | Value |
|---|---|---|
| 1 |
Amazon
AMZN
|
+$2.49B |
| 2 |
NVIDIA
NVDA
|
+$2.19B |
| 3 |
State Street SPDR Dow Jones Industrial Average ETF Trust
DIA
|
+$1.94B |
| 4 |
TSMC
TSM
|
+$728M |
| 5 |
UnitedHealth
UNH
|
+$705M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Meta Platforms (Facebook)
META
|
+$775M |
| 2 |
AbbVie
ABBV
|
+$540M |
| 3 |
Delta Air Lines
DAL
|
+$434M |
| 4 |
Eli Lilly
LLY
|
+$433M |
| 5 |
DexCom
DXCM
|
+$433M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 4.89% |
| 2 | Healthcare | 2.92% |
| 3 | Financials | 2.71% |
| 4 | Consumer Discretionary | 2.52% |
| 5 | Industrials | 2.2% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
2851
Avnet
AVT
$7.86B
| $13.1M | ﹤0.01% |
272,822
-959,001
| -78% | -$47.1M |
|
2852
Silgan Holdings
SLGN
$4.49B
| $13.1M | ﹤0.01% |
324,912
-1,642
| -0.5% | -$66.6K |
|
2853
Geron
GERN
$943M
| $13.1M | ﹤0.01% |
9,925,786
-5,779,282
| -37% | -$7.25M |
|
2854
Nektar Therapeutics
NKTR
$2.49B
| $13.1M | ﹤0.01% |
309,777
-51,296
| -14% | -$2.87M |
|
2855
CALL
Western Midstream Partners
WES
$20.2B
| $13.1M | ﹤0.01% |
331,384
-205,316
| -38% | -$7.96M |
|
2856
East-West Bancorp
EWBC
$18.7B
| $13.1M | ﹤0.01% |
116,401
+61,555
| +112% | +$6.53M |
|
2857
PUT
Navitas Semiconductor
NVTS
$3.77B
| $13.1M | ﹤0.01% |
1,830,300
+612,100
| +50% | +$5.89M |
|
2858
CALL
Idexx Laboratories
IDXX
$43.4B
| $13.1M | ﹤0.01% |
19,300
-12,700
| -40% | -$8.65M |
|
2859
CALL
RELX
RELX
$60B
| $13M | ﹤0.01% |
322,800
-14,400
| -4% | -$615K |
|
2860
Bilibili
BILI
$7.3B
| $13M | ﹤0.01% |
530,415
-152,150
| -22% | -$4.09M |
|
2861
CALL
Zions Bancorporation
ZION
$10.5B
| $13M | ﹤0.01% |
222,400
+155,300
| +231% | +$8.46M |
|
2862
PUT
Samsara
IOT
$23.2B
| $13M | ﹤0.01% |
366,900
-270,500
| -42% | -$10.5M |
|
|
CNTA
2863
DELISTED
Centessa Pharmaceuticals
CNTA
| $13M | ﹤0.01% |
519,962
+382,761
| +279% | +$9.69M |
|
|
BCAX
2864
Bicara Therapeutics
BCAX
$1.61B
| $13M | ﹤0.01% |
+772,258
| New | +$13.2M |
|
2865
PUT
Shift4
FOUR
$3.58B
| $13M | ﹤0.01% |
206,400
+152,600
| +284% | +$10.8M |
|
2866
FuboTV Inc
FUBO
$307M
| $13M | ﹤0.01% |
429,332
-151,263
| -26% | -$6.04M |
|
2867
CALL
Cracker Barrel
CBRL
$1.29B
| $13M | ﹤0.01% |
511,100
+201,600
| +65% | +$6.45M |
|
2868
PUT
Tractor Supply
TSCO
$18.7B
| $13M | ﹤0.01% |
259,500
-22,500
| -8% | -$1.21M |
|
2869
PUT
Universal Health Services
UHS
$10B
| $13M | ﹤0.01% |
59,500
-11,900
| -17% | -$2.63M |
|
2870
Carlyle Group
CG
$17.6B
| $13M | ﹤0.01% |
219,275
+118,513
| +118% | +$6.73M |
|
2871
Asana
ASAN
$2.11B
| $13M | ﹤0.01% |
945,195
+143,225
| +18% | +$1.97M |
|
|
TBN
2872
Tamboran Resources
TBN
$1.28B
| $13M | ﹤0.01% |
+475,595
| New | +$12.1M |
|
2873
CALL
Vail Resorts
MTN
$5.28B
| $12.9M | ﹤0.01% |
97,500
-56,700
| -37% | -$8.34M |
|
2874
CALL
Ascendis Pharma A/S
ASND
$16.3B
| $12.9M | ﹤0.01% |
60,700
-33,100
| -35% | -$6.84M |
|
2875
PUT
Semtech
SMTC
$13.1B
| $12.9M | ﹤0.01% |
175,600
-34,100
| -16% | -$2.42M |
|
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Ken Griffin's Q4 2025 Portfolio in Review
As of Q4 2025, Ken Griffin held 14,701 positions worth $666B, up 1.3% from $657B the previous quarter. Its ten largest holdings account for 23% of the portfolio.
Ken Griffin's Q4 2025 filing shows 2,078 new, 5,000 increased, 5,362 reduced and 2,191 closed positions. Its largest new stake was Medline Inc: 6,006,339 shares worth $252M. The largest sale was Meta Platforms (Facebook), an estimated $775M.
By sector, the portfolio is most concentrated in Technology at 4.9% of assets, up from 3.8% a quarter earlier, followed by Healthcare and Financials.
- Ken Griffin's largest Q4 2025 buy was Medline Inc: 6,006,339 shares worth $252M.
- Ken Griffin added most to Amazon in Q4 2025, an estimated $2.49B increase.
- Ken Griffin's biggest Q4 2025 reduction was Meta Platforms (Facebook), cutting an estimated $775M.
- Ken Griffin fully exited WEX in Q4 2025, selling an estimated $131M.
- Ken Griffin's ten largest holdings make up 23% of its $666B portfolio in Q4 2025.
- Ken Griffin opened 2,078 new positions and closed 2,191 in Q4 2025.
- Ken Griffin's portfolio value rose 1.3% quarter-over-quarter to $666B.
Based on Citadel Advisors's 13F filing for Q4 2025, filed 17 Feb 2026.