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 | |
|---|---|---|---|---|---|---|
2151
nLIGHT
LASR
$3.03B
| $22.7M | ﹤0.01% |
398,331
+109,479
| +38% | +$5.93M |
|
2152
Fluor
FLR
$7B
| $22.7M | ﹤0.01% |
486,430
-745,464
| -61% | -$34.7M |
|
2153
CALL
iShares Core S&P Small-Cap ETF
IJR
$114B
| $22.7M | ﹤0.01% |
182,500
+77,000
| +73% | +$9.78M |
|
2154
MDU Resources
MDU
$4.34B
| $22.7M | ﹤0.01% |
1,094,809
-609,822
| -36% | -$12.5M |
|
2155
National Grid
NGG
$81.5B
| $22.7M | ﹤0.01% |
268,030
+225,970
| +537% | +$19.5M |
|
2156
CALL
Hycroft Mining Holding Corp
HYMC
$2.52B
| $22.7M | ﹤0.01% |
644,100
+443,300
| +221% | +$17.1M |
|
2157
Navitas Semiconductor
NVTS
$3.77B
| $22.7M | ﹤0.01% |
2,584,734
+895,481
| +53% | +$8.25M |
|
2158
PUT
iShares Gold Trust
IAU
$64.9B
| $22.7M | ﹤0.01% |
257,100
+18,800
| +8% | +$1.72M |
|
2159
IDEAYA Biosciences
IDYA
$3.49B
| $22.6M | ﹤0.01% |
679,400
-279,955
| -29% | -$9.39M |
|
2160
PUT
ZIM Integrated Shipping Services
ZIM
$3.39B
| $22.6M | ﹤0.01% |
859,000
-1,123,300
| -57% | -$28M |
|
|
BBOT
2161
BridgeBio Oncology
BBOT
$726M
| $22.6M | ﹤0.01% |
2,528,762
-1,562
| -0.1% | -$16.8K |
|
2162
Klaviyo
KVYO
$5.26B
| $22.6M | ﹤0.01% |
1,162,379
+846,610
| +268% | +$18.2M |
|
2163
PUT
Opendoor
OPEN
$3.53B
| $22.6M | ﹤0.01% |
4,827,800
-5,946,500
| -55% | -$32M |
|
2164
GDS Holdings
GDS
$6.89B
| $22.6M | ﹤0.01% |
560,751
+500,077
| +824% | +$21.4M |
|
|
SF
2165
Stifel
SF
$12.9B
| $22.6M | ﹤0.01% |
+305,130
| New | +$24.2M |
|
2166
iShares MSCI EAFE Small-Cap ETF
SCZ
$13.6B
| $22.6M | ﹤0.01% |
+287,647
| New | +$23.4M |
|
2167
Grindr
GRND
$2.78B
| $22.5M | ﹤0.01% |
1,864,925
+1,810,733
| +3,341% | +$21.3M |
|
2168
Pembina Pipeline
PBA
$28.7B
| $22.5M | ﹤0.01% |
503,362
+496,204
| +6,932% | +$21M |
|
2169
CALL
MPLX
MPLX
$60.3B
| $22.5M | ﹤0.01% |
394,600
-125,200
| -24% | -$7.1M |
|
|
FLY
2170
PUT
Firefly Aerospace
FLY
$4.46B
| $22.5M | ﹤0.01% |
790,800
+464,500
| +142% | +$11.3M |
|
2171
PUT
Amprius Technologies
AMPX
$1.83B
| $22.5M | ﹤0.01% |
1,334,300
+829,000
| +164% | +$10.8M |
|
2172
PUT
Snap
SNAP
$9.15B
| $22.5M | ﹤0.01% |
4,888,000
-485,000
| -9% | -$2.86M |
|
2173
XPeng
XPEV
$11.2B
| $22.5M | ﹤0.01% |
1,313,910
+102,944
| +9% | +$1.91M |
|
2174
PUT
Sprouts Farmers Market
SFM
$7.69B
| $22.5M | ﹤0.01% |
291,400
+13,100
| +5% | +$978K |
|
2175
HealthEquity
HQY
$8.76B
| $22.5M | ﹤0.01% |
268,832
+53,565
| +25% | +$4.39M |
|
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.