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 | |
|---|---|---|---|---|---|---|
5376
CALL
Western Union
WU
$2.34B
| $2.79M | ﹤0.01% |
319,500
+62,500
| +24% | +$592K |
|
5377
CALL
Vanguard Morningstar Mid-Cap ETF
VO
$111B
| $2.79M | ﹤0.01% |
38,800
+13,200
| +52% | +$981K |
|
5378
CBIZ
CBZ
$2.96B
| $2.78M | ﹤0.01% |
103,645
-204,060
| -66% | -$7.2M |
|
5379
Oceaneering
OII
$5.11B
| $2.78M | ﹤0.01% |
78,377
+15,604
| +25% | +$505K |
|
5380
Panagram BBB-B CLO ETF
CLOZ
$805M
| $2.78M | ﹤0.01% |
108,348
+5,440
| +5% | +$143K |
|
|
EHAB
5381
DELISTED
Enhabit
EHAB
| $2.77M | ﹤0.01% |
196,897
-221,221
| -53% | -$2.65M |
|
5382
ODDITY Tech
ODD
$615M
| $2.77M | ﹤0.01% |
207,291
+81,545
| +65% | +$2.04M |
|
5383
CALL
Roivant Sciences
ROIV
$26.2B
| $2.77M | ﹤0.01% |
100,100
-262,700
| -72% | -$6.75M |
|
5384
PUT
Nektar Therapeutics
NKTR
$2.57B
| $2.77M | ﹤0.01% |
38,500
-49,500
| -56% | -$2.82M |
|
5385
Transcat
TRNS
$888M
| $2.77M | ﹤0.01% |
37,697
-64,384
| -63% | -$4.53M |
|
5386
Ivanhoe Electric
IE
$1.66B
| $2.77M | ﹤0.01% |
+234,210
| New | +$3.67M |
|
5387
PUT
Constellium
CSTM
$3.95B
| $2.77M | ﹤0.01% |
112,600
+75,300
| +202% | +$1.79M |
|
5388
CALL
PAR Technology
PAR
$770M
| $2.77M | ﹤0.01% |
207,600
+154,800
| +293% | +$3.64M |
|
5389
CALL
Vanguard Total World Stock ETF
VT
$81.9B
| $2.77M | ﹤0.01% |
20,000
+4,000
| +25% | +$575K |
|
5390
PUT
Halozyme
HALO
$11.4B
| $2.77M | ﹤0.01% |
42,800
+26,600
| +164% | +$1.88M |
|
5391
RPC Inc
RES
$1.39B
| $2.76M | ﹤0.01% |
390,000
-375,899
| -49% | -$2.34M |
|
5392
PUT
Imperial Oil
IMO
$64B
| $2.76M | ﹤0.01% |
21,100
-278,900
| -93% | -$31.3M |
|
|
APLS
5393
PUT
DELISTED
Apellis Pharmaceuticals
APLS
| $2.76M | ﹤0.01% |
68,600
-55,400
| -45% | -$1.19M |
|
5394
Casella Waste Systems
CWST
$5.79B
| $2.76M | ﹤0.01% |
34,749
-430,023
| -93% | -$41.2M |
|
5395
CALL
Dorian LPG
LPG
$1.95B
| $2.76M | ﹤0.01% |
80,600
-9,300
| -10% | -$294K |
|
5396
CALL
Starwood Property Trust
STWD
$6.05B
| $2.76M | ﹤0.01% |
160,000
+1,400
| +0.9% | +$25.1K |
|
5397
iShares MSCI Brazil Small-Cap ETF
EWZS
$207M
| $2.75M | ﹤0.01% |
185,943
-205,552
| -53% | -$2.98M |
|
5398
Cadeler
CDLR
$2.18B
| $2.75M | ﹤0.01% |
116,890
+92,284
| +375% | +$2.18M |
|
5399
CALL
Elanco Animal Health
ELAN
$11.2B
| $2.75M | ﹤0.01% |
114,900
-25,000
| -18% | -$611K |
|
5400
Omeros
OMER
$1.26B
| $2.75M | ﹤0.01% |
260,048
+19,696
| +8% | +$232K |
|
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.