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 | |
|---|---|---|---|---|---|---|
426
Fox Class A
FOXA
$26.1B
| $232M | 0.03% |
3,179,645
+2,907,456
| +1,068% | +$190M |
|
427
iShares MSCI Emerging Markets ETF
EEM
$30.3B
| $231M | 0.03% |
4,227,402
+811,361
| +24% | +$44.1M |
|
428
CALL
Cloudflare
NET
$112B
| $230M | 0.03% |
1,168,500
-27,500
| -2% | -$5.82M |
|
429
PUT
Chevron
CVX
$386B
| $229M | 0.03% |
1,504,852
-632,306
| -30% | -$96.3M |
|
430
Repligen
RGEN
$9.36B
| $228M | 0.03% |
1,394,252
-290,468
| -17% | -$45.5M |
|
431
PUT
Capital One
COF
$135B
| $228M | 0.03% |
941,374
+71,031
| +8% | +$15.8M |
|
432
Western Digital
WDC
$158B
| $227M | 0.03% |
1,319,766
-2,407,840
| -65% | -$365M |
|
433
Lockheed Martin
LMT
$138B
| $227M | 0.03% |
468,669
-480,040
| -51% | -$230M |
|
434
PUT
General Motors
GM
$77B
| $226M | 0.03% |
2,774,600
+999,700
| +56% | +$70.5M |
|
435
PUT
ARK Innovation ETF
ARKK
$6.42B
| $225M | 0.03% |
2,923,900
-1,320,500
| -31% | -$109M |
|
436
TransDigm Group
TDG
$69B
| $225M | 0.03% |
169,018
+154,078
| +1,031% | +$202M |
|
437
Nike
NKE
$60.3B
| $225M | 0.03% |
3,526,081
+736,274
| +26% | +$48M |
|
438
Atlassian
TEAM
$38.7B
| $224M | 0.03% |
1,383,263
-365,582
| -21% | -$57.4M |
|
439
PUT
Verizon
VZ
$194B
| $222M | 0.03% |
5,449,400
+3,122,600
| +134% | +$127M |
|
440
Globus Medical
GMED
$11.3B
| $222M | 0.03% |
2,539,396
+2,427,303
| +2,165% | +$184M |
|
441
Analog Devices
ADI
$187B
| $222M | 0.03% |
816,834
+494,647
| +154% | +$124M |
|
442
PUT
American Airlines Group
AAL
$9.96B
| $221M | 0.03% |
14,436,600
-3,277,800
| -19% | -$44.2M |
|
|
443
CALL
Verizon
VZ
$194B
| $221M | 0.03% |
5,433,300
+535,500
| +11% | +$21.7M |
|
444
Las Vegas Sands
LVS
$29.6B
| $219M | 0.03% |
3,368,422
-5,144,811
| -60% | -$315M |
|
445
PUT
Synopsys
SNPS
$79.3B
| $218M | 0.03% |
463,625
+170,622
| +58% | +$75.8M |
|
446
CALL
Celestica
CLS
$42.2B
| $217M | 0.03% |
733,100
+125,400
| +21% | +$37.8M |
|
447
PUT
Hims & Hers Health
HIMS
$6.96B
| $216M | 0.03% |
6,664,400
+426,400
| +7% | +$18.3M |
|
448
PUT
Freeport-McMoran
FCX
$97B
| $216M | 0.03% |
4,258,300
+152,300
| +4% | +$6.6M |
|
449
CALL
Bristol-Myers Squibb
BMY
$130B
| $216M | 0.03% |
3,997,600
+163,300
| +4% | +$7.86M |
|
450
Invesco QQQ Trust
QQQ
$482B
| $215M | 0.03% |
350,522
-230,011
| -40% | -$141M |
|
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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.