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 | |
|---|---|---|---|---|---|---|
901
PUT
New York Times
NYT
$10.3B
| $88.3M | 0.01% |
1,054,100
+1,038,200
| +6,530% | +$78.5M |
|
902
Union Pacific
UNP
$177B
| $88M | 0.01% |
362,808
-540,386
| -60% | -$132M |
|
903
PUT
Shell
SHEL
$248B
| $88M | 0.01% |
946,000
+574,800
| +155% | +$46.4M |
|
904
Enphase Energy
ENPH
$5.39B
| $87.9M | 0.01% |
2,324,659
+1,019,644
| +78% | +$42.3M |
|
905
CALL
Marathon Digital Holdings
MARA
$3.56B
| $87.2M | 0.01% |
10,683,600
+815,200
| +8% | +$7.38M |
|
906
Columbia Banking Systems
COLB
$9.18B
| $87.1M | 0.01% |
3,173,756
+534,530
| +20% | +$15.5M |
|
907
CALL
Amphenol
APH
$204B
| $86.9M | 0.01% |
687,900
+309,000
| +82% | +$43.5M |
|
908
PUT
Hims & Hers Health
HIMS
$6.71B
| $86.8M | 0.01% |
4,179,700
-2,484,700
| -37% | -$58.7M |
|
909
CALL
Kinder Morgan
KMI
$71.4B
| $86.4M | 0.01% |
2,577,900
+856,500
| +50% | +$26.8M |
|
910
Southern Company
SO
$107B
| $86.4M | 0.01% |
894,897
+502,837
| +128% | +$46.5M |
|
911
PUT
Airbnb
ABNB
$111B
| $86.3M | 0.01% |
683,700
-1,218,600
| -64% | -$158M |
|
|
TEM
912
CALL
Tempus AI
TEM
$9.8B
| $86.3M | 0.01% |
1,907,900
+208,600
| +12% | +$11.9M |
|
913
Dick's Sporting Goods
DKS
$18.1B
| $85.6M | 0.01% |
431,757
+399,728
| +1,248% | +$81.1M |
|
|
AXON
914
Axon Enterprise
AXON
$50B
| $85.2M | 0.01% |
200,642
-14,615
| -7% | -$7.59M |
|
915
Medtronic
MDT
$116B
| $85.2M | 0.01% |
982,741
-4,246,447
| -81% | -$407M |
|
916
CALL
State Street SPDR S&P Metals & Mining ETF
XME
$4.46B
| $85.1M | 0.01% |
788,100
-367,600
| -32% | -$42.9M |
|
917
CALL
Global X Copper Miners ETF NEW
COPX
$7.97B
| $85.1M | 0.01% |
1,114,200
+807,900
| +264% | +$66.9M |
|
918
PUT
Roblox
RBLX
$27.1B
| $85.1M | 0.01% |
1,504,000
-485,800
| -24% | -$32.6M |
|
919
PUT
State Street SPDR S&P Retail ETF
XRT
$643M
| $85M | 0.01% |
1,056,500
+271,600
| +35% | +$23.3M |
|
920
Semtech
SMTC
$12.4B
| $85M | 0.01% |
1,105,555
-564,663
| -34% | -$46.4M |
|
|
FISV
921
CALL
Fiserv Inc
FISV
$29.5B
| $84.9M | 0.01% |
1,521,000
+480,000
| +46% | +$29.7M |
|
922
PUT
Valero Energy
VLO
$98.7B
| $84.8M | 0.01% |
343,300
-112,700
| -25% | -$23.2M |
|
923
PUT
iShares US Real Estate ETF
IYR
$4.58B
| $84.8M | 0.01% |
896,500
-190,600
| -18% | -$18.5M |
|
924
CALL
Invesco NASDAQ 100 ETF
QQQM
$104B
| $84.8M | 0.01% |
356,700
+174,000
| +95% | +$43.5M |
|
925
Portland General Electric
POR
$5.92B
| $84.7M | 0.01% |
1,605,636
+983,608
| +158% | +$50.5M |
|
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.