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 | |
|---|---|---|---|---|---|---|
3851
PUT
Boston Properties
BXP
$10.7B
| $6.61M | ﹤0.01% |
127,400
+16,500
| +15% | +$993K |
|
3852
PUT
JB Hunt Transport Services
JBHT
$26.9B
| $6.61M | ﹤0.01% |
31,200
-88,000
| -74% | -$18.8M |
|
3853
C4 Therapeutics
CCCC
$517M
| $6.6M | ﹤0.01% |
2,511,015
+2,063,207
| +461% | +$4.86M |
|
3854
Federal Signal
FSS
$7.74B
| $6.6M | ﹤0.01% |
61,050
+30,482
| +100% | +$3.45M |
|
3855
PUT
PAR Technology
PAR
$774M
| $6.6M | ﹤0.01% |
495,000
+472,800
| +2,130% | +$11.1M |
|
3856
Addus HomeCare
ADUS
$2.15B
| $6.6M | ﹤0.01% |
70,438
+42,314
| +150% | +$4.48M |
|
3857
Driven Brands
DRVN
$2.07B
| $6.59M | ﹤0.01% |
522,614
+371,062
| +245% | +$5.22M |
|
3858
CALL
Semtech
SMTC
$14.3B
| $6.59M | ﹤0.01% |
85,700
-117,700
| -58% | -$9.68M |
|
3859
Douglas Emmett
DEI
$1.93B
| $6.59M | ﹤0.01% |
699,307
+644,579
| +1,178% | +$6.63M |
|
3860
PUT
Tractor Supply
TSCO
$18.1B
| $6.59M | ﹤0.01% |
145,400
-114,100
| -44% | -$5.82M |
|
3861
PUT
O'Reilly Automotive
ORLY
$73.3B
| $6.58M | ﹤0.01% |
71,300
-171,600
| -71% | -$16.1M |
|
3862
CNA Financial
CNA
$13.5B
| $6.58M | ﹤0.01% |
143,306
-233,688
| -62% | -$11.1M |
|
3863
Etsy
ETSY
$7.26B
| $6.58M | ﹤0.01% |
131,563
-1,051,824
| -89% | -$57.5M |
|
3864
CALL
FLEX LNG
FLNG
$1.67B
| $6.57M | ﹤0.01% |
221,200
+49,700
| +29% | +$1.37M |
|
3865
AltShares Merger Arbitrage ETF
ARB
$104M
| $6.56M | ﹤0.01% |
+223,598
| New | +$6.52M |
|
3866
PUT
Ferguson
FERG
$47.8B
| $6.55M | ﹤0.01% |
28,100
-4,500
| -14% | -$1.1M |
|
3867
CALL
Equifax
EFX
$21B
| $6.55M | ﹤0.01% |
36,400
+11,400
| +46% | +$2.26M |
|
3868
CALL
iShares Core S&P Total US Stock Market ETF
ITOT
$98B
| $6.55M | ﹤0.01% |
46,000
+32,400
| +238% | +$4.82M |
|
3869
Lincoln Electric
LECO
$15.6B
| $6.54M | ﹤0.01% |
26,269
-20,394
| -44% | -$5.46M |
|
3870
CALL
Vanguard FTSE Developed Markets ETF
VEA
$240B
| $6.54M | ﹤0.01% |
102,100
+90,500
| +780% | +$5.97M |
|
3871
Walker & Dunlop
WD
$1.4B
| $6.54M | ﹤0.01% |
147,416
+53,963
| +58% | +$3.04M |
|
3872
CALL
Textron
TXT
$15.1B
| $6.54M | ﹤0.01% |
74,700
+12,000
| +19% | +$1.12M |
|
3873
CALL
Baxter International
BAX
$13.4B
| $6.53M | ﹤0.01% |
388,700
+2,900
| +0.8% | +$56.1K |
|
3874
Philips
PHG
$26.3B
| $6.53M | ﹤0.01% |
246,983
+63,316
| +34% | +$1.79M |
|
3875
First Financial Bankshares
FFIN
$5.02B
| $6.52M | ﹤0.01% |
221,498
-30,522
| -12% | -$962K |
|
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.