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 |
iShares Core S&P 500 ETF
IVV
|
+$2.72B |
| 2 |
Meta Platforms (Facebook)
META
|
+$660M |
| 3 |
Micron Technology
MU
|
+$605M |
| 4 |
Mastercard
MA
|
+$497M |
| 5 |
Tesla
TSLA
|
+$495M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Amazon
AMZN
|
+$1.33B |
| 2 |
Visa
V
|
+$1.26B |
| 3 |
State Street SPDR S&P 500 ETF Trust
SPY
|
+$1.23B |
| 4 |
Lam Research
LRCX
|
+$699M |
| 5 |
State Street SPDR Dow Jones Industrial Average ETF Trust
DIA
|
+$681M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 4.49% |
| 2 | Healthcare | 2.99% |
| 3 | Financials | 2.85% |
| 4 | Industrials | 2.56% |
| 5 | Consumer Discretionary | 2.23% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
2901
CALL
ResMed
RMD
$32.4B
| $12.5M | ﹤0.01% |
55,700
+34,500
| +163% | +$8.6M |
|
2902
PUT
Hershey
HSY
$37B
| $12.5M | ﹤0.01% |
60,100
-65,900
| -52% | -$13.9M |
|
2903
Appian
APPN
$2.54B
| $12.5M | ﹤0.01% |
518,009
-35,013
| -6% | -$950K |
|
2904
PUT
Truist Financial
TFC
$64.9B
| $12.5M | ﹤0.01% |
271,600
-76,000
| -22% | -$3.76M |
|
2905
CALL
Lincoln National
LNC
$8.7B
| $12.5M | ﹤0.01% |
351,300
+105,100
| +43% | +$4.04M |
|
2906
Ardmore Shipping
ASC
$719M
| $12.5M | ﹤0.01% |
817,041
+352,547
| +76% | +$4.84M |
|
2907
Fidelity Total Bond ETF
FBND
$27.3B
| $12.4M | ﹤0.01% |
+272,762
| New | +$12.6M |
|
2908
PUT
Markel Group
MKL
$22.9B
| $12.4M | ﹤0.01% |
6,500
-2,200
| -25% | -$4.46M |
|
2909
MP Materials
MP
$10.5B
| $12.4M | ﹤0.01% |
+257,413
| New | +$15.4M |
|
2910
PUT
Huntington Ingalls Industries
HII
$12.9B
| $12.4M | ﹤0.01% |
32,700
+3,000
| +10% | +$1.24M |
|
2911
CALL
Herbalife
HLF
$1.29B
| $12.4M | ﹤0.01% |
843,300
+50,200
| +6% | +$820K |
|
2912
CALL
Citizens Financial Group
CFG
$31.5B
| $12.4M | ﹤0.01% |
206,900
+21,200
| +11% | +$1.3M |
|
2913
CALL
Capri Holdings
CPRI
$1.74B
| $12.4M | ﹤0.01% |
703,600
+38,800
| +6% | +$821K |
|
2914
PUT
Caesars Entertainment
CZR
$6.06B
| $12.4M | ﹤0.01% |
468,700
-1,587,700
| -77% | -$37.8M |
|
|
OKLO
2915
Oklo
OKLO
$8.26B
| $12.4M | ﹤0.01% |
249,676
+31,204
| +14% | +$2.24M |
|
2916
CALL
MoonLake Immunotherapeutics
MLTX
$1.4B
| $12.4M | ﹤0.01% |
664,000
-828,800
| -56% | -$13.7M |
|
2917
CALL
ZIM Integrated Shipping Services
ZIM
$3.39B
| $12.4M | ﹤0.01% |
469,500
-320,800
| -41% | -$7.99M |
|
2918
Kosmos Energy
KOS
$1.51B
| $12.4M | ﹤0.01% |
4,450,077
-1,106,175
| -20% | -$2.08M |
|
2919
CALL
GDS Holdings
GDS
$6.89B
| $12.4M | ﹤0.01% |
306,900
+58,300
| +23% | +$2.5M |
|
2920
PUT
PNC Financial Services
PNC
$103B
| $12.4M | ﹤0.01% |
59,400
+7,700
| +15% | +$1.68M |
|
2921
PUT
Magnite
MGNI
$3.55B
| $12.4M | ﹤0.01% |
1,040,000
+279,800
| +37% | +$3.75M |
|
2922
Halozyme
HALO
$11.2B
| $12.3M | ﹤0.01% |
+191,051
| New | +$13.5M |
|
2923
CALL
Vulcan Materials
VMC
$36.5B
| $12.3M | ﹤0.01% |
45,300
+27,400
| +153% | +$8.06M |
|
2924
PUT
Sony
SONY
$142B
| $12.3M | ﹤0.01% |
595,500
+109,400
| +23% | +$2.45M |
|
2925
CALL
CRISPR Therapeutics
CRSP
$5.18B
| $12.3M | ﹤0.01% |
258,900
-319,800
| -55% | -$16.9M |
|
Similar funds
Ken Griffin's Q1 2026 Portfolio in Review
As of Q1 2026, Ken Griffin held 14,860 positions worth $618B, down 7.1% from $666B the previous quarter. Its ten largest holdings account for 22% of the portfolio.
Ken Griffin withdrew a net $19.5B in Q1 2026, closing 2,003 positions and reducing 5,286 holdings. Its most notable exit was CyberArk, an estimated $305M position sold in full.
By sector, the portfolio is most concentrated in Technology at 4.5% of assets, down from 4.9% a quarter earlier, followed by Healthcare and Financials.
Against the trend, Ken Griffin opened a new position in iShares 7-10 Year Treasury Bond ETF worth $327M.
- Ken Griffin's largest Q1 2026 buy was iShares 7-10 Year Treasury Bond ETF: 3,431,225 shares worth $327M.
- Ken Griffin added most to iShares Core S&P 500 ETF in Q1 2026, an estimated $2.72B increase.
- Ken Griffin's biggest Q1 2026 reduction was Amazon, cutting an estimated $1.33B.
- Ken Griffin fully exited CyberArk in Q1 2026, selling an estimated $305M.
- Ken Griffin's ten largest holdings make up 22% of its $618B portfolio in Q1 2026.
- Ken Griffin opened 2,347 new positions and closed 2,003 in Q1 2026.
- Ken Griffin's portfolio value fell 7.1% quarter-over-quarter to $618B.
Based on Citadel Advisors's 13F filing for Q1 2026, filed 15 May 2026.