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 | |
|---|---|---|---|---|---|---|
|
AMRZ
1951
PUT
Amrize Ltd
AMRZ
$25.5B
| $26.7M | ﹤0.01% |
477,400
+125,700
| +36% | +$7.21M |
|
1952
PUT
SAP
SAP
$241B
| $26.7M | ﹤0.01% |
156,200
+8,500
| +6% | +$1.75M |
|
1953
CALL
MasTec
MTZ
$23.7B
| $26.7M | ﹤0.01% |
83,100
-2,600
| -3% | -$704K |
|
1954
CALL
Revolution Medicines
RVMD
$43.3B
| $26.7M | ﹤0.01% |
274,900
+151,100
| +122% | +$15.3M |
|
|
DEC
1955
Diversified Energy Company
DEC
$1.01B
| $26.7M | ﹤0.01% |
1,531,035
+271,457
| +22% | +$3.82M |
|
1956
United Bankshares
UBSI
$6.7B
| $26.7M | ﹤0.01% |
644,254
+574,740
| +827% | +$23.9M |
|
1957
Veeva Systems
VEEV
$40B
| $26.6M | ﹤0.01% |
151,543
-191,150
| -56% | -$37.6M |
|
1958
Vertiv
VRT
$113B
| $26.6M | ﹤0.01% |
106,123
-688,139
| -87% | -$153M |
|
1959
CALL
Pultegroup
PHM
$24.8B
| $26.6M | ﹤0.01% |
225,900
+92,000
| +69% | +$11.8M |
|
1960
Zeta Global
ZETA
$7.31B
| $26.6M | ﹤0.01% |
1,668,431
-347,562
| -17% | -$6.43M |
|
1961
Stantec
STN
$8.44B
| $26.5M | ﹤0.01% |
307,054
+162,133
| +112% | +$15.2M |
|
1962
PUT
Tenet Healthcare
THC
$21.5B
| $26.5M | ﹤0.01% |
140,400
-25,800
| -16% | -$5.44M |
|
1963
UBS Group
UBS
$176B
| $26.5M | ﹤0.01% |
677,062
+593,439
| +710% | +$25.4M |
|
|
KEEL
1964
Keel Infrastructure Corp
KEEL
$2.09B
| $26.5M | ﹤0.01% |
13,565,213
-6,453,322
| -32% | -$15.2M |
|
1965
Deutsche Bank
DB
$72.5B
| $26.4M | ﹤0.01% |
887,690
+239,126
| +37% | +$8.42M |
|
1966
CALL
iShares Biotechnology ETF
IBB
$9.69B
| $26.4M | ﹤0.01% |
156,400
-3,100
| -2% | -$530K |
|
|
CON
1967
Concentra Group Holdings
CON
$4.49B
| $26.4M | ﹤0.01% |
1,230,675
-1,020,054
| -45% | -$22.7M |
|
|
EXK
1968
Endeavour Silver
EXK
$3.16B
| $26.4M | ﹤0.01% |
2,831,775
+884,226
| +45% | +$9.99M |
|
1969
PUT
KB Home
KBH
$3.43B
| $26.3M | ﹤0.01% |
509,100
-51,600
| -9% | -$3.03M |
|
1970
Celanese
CE
$4.95B
| $26.3M | ﹤0.01% |
399,794
-1,850,173
| -82% | -$96.6M |
|
1971
PTC Therapeutics
PTCT
$5.96B
| $26.2M | ﹤0.01% |
385,199
-769,256
| -67% | -$54.5M |
|
1972
Global X Uranium ETF
URA
$6.3B
| $26.2M | ﹤0.01% |
541,842
+536,326
| +9,723% | +$27.9M |
|
1973
ESCO Technologies
ESE
$7.96B
| $26.2M | ﹤0.01% |
+93,116
| New | +$23.5M |
|
1974
NNN REIT
NNN
$8.88B
| $26.2M | ﹤0.01% |
623,336
+160,697
| +35% | +$6.92M |
|
1975
STAG Industrial
STAG
$7.12B
| $26.2M | ﹤0.01% |
726,478
-605,571
| -45% | -$23M |
|
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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.