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 | |
|---|---|---|---|---|---|---|
226
CALL
Palo Alto Networks
PANW
$313B
| $435M | 0.07% |
2,361,500
-743,600
| -24% | -$150M |
|
227
Blackrock
BLK
$178B
| $432M | 0.06% |
403,819
+249,545
| +162% | +$273M |
|
228
CALL
Iris Energy
IREN
$14.2B
| $429M | 0.06% |
11,360,400
+2,336,100
| +26% | +$121M |
|
|
NBIS
229
CALL
Nebius Group N.V.
NBIS
$49.1B
| $422M | 0.06% |
5,039,000
-174,300
| -3% | -$18.1M |
|
230
Salesforce
CRM
$162B
| $420M | 0.06% |
1,584,625
+840,985
| +113% | +$209M |
|
231
JPMorgan Chase
JPM
$962B
| $419M | 0.06% |
1,300,737
+182,372
| +16% | +$56.5M |
|
232
PUT
PepsiCo
PEP
$189B
| $419M | 0.06% |
2,920,200
-1,107,900
| -28% | -$163M |
|
233
Parker-Hannifin
PH
$134B
| $417M | 0.06% |
474,350
+154,824
| +48% | +$127M |
|
|
NVO
234
CALL
Novo Nordisk
NVO
$207B
| $415M | 0.06% |
8,155,500
+2,068,000
| +34% | +$106M |
|
235
PUT
Arm
ARM
$287B
| $413M | 0.06% |
3,781,600
+230,500
| +6% | +$33.5M |
|
236
PUT
Qualcomm
QCOM
$171B
| $412M | 0.06% |
2,407,700
-92,000
| -4% | -$15.8M |
|
237
PUT
Merck
MRK
$322B
| $411M | 0.06% |
3,900,600
+15,200
| +0.4% | +$1.43M |
|
238
PUT
Rocket Lab Corp
RKLB
$51.2B
| $409M | 0.06% |
5,856,100
-91,300
| -2% | -$5.23M |
|
239
CALL
MongoDB
MDB
$35.3B
| $407M | 0.06% |
969,700
-210,700
| -18% | -$76.7M |
|
240
Linde
LIN
$226B
| $404M | 0.06% |
946,649
+670,540
| +243% | +$287M |
|
241
Air Products & Chemicals
APD
$68.9B
| $403M | 0.06% |
1,631,039
+668,490
| +69% | +$169M |
|
242
PUT
Uber
UBER
$160B
| $402M | 0.06% |
4,914,400
-72,200
| -1% | -$6.5M |
|
243
Tesla
TSLA
$1.31T
| $401M | 0.06% |
891,152
-608,255
| -41% | -$270M |
|
244
GE Aerospace
GE
$382B
| $400M | 0.06% |
1,299,297
+712,976
| +122% | +$215M |
|
245
Thermo Fisher Scientific
TMO
$224B
| $400M | 0.06% |
690,405
+340,704
| +97% | +$193M |
|
246
CALL
Starbucks
SBUX
$122B
| $398M | 0.06% |
4,727,100
+704,600
| +18% | +$59.4M |
|
247
Cisco
CSCO
$475B
| $398M | 0.06% |
5,164,855
+3,933,821
| +320% | +$292M |
|
248
Citigroup
C
$228B
| $395M | 0.06% |
3,389,222
-875,931
| -21% | -$91M |
|
|
249
PUT
Iris Energy
IREN
$14.2B
| $394M | 0.06% |
10,429,700
-2,298,400
| -18% | -$119M |
|
250
CALL
Procter & Gamble
PG
$338B
| $394M | 0.06% |
2,746,100
+669,900
| +32% | +$98.8M |
|
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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.