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 | |
|---|---|---|---|---|---|---|
8276
CALL
Ardelyx
ARDX
$1.04B
| $761K | ﹤0.01% |
127,000
-93,100
| -42% | -$616K |
|
8277
iShares 25+ Year Treasury STRIPS Bond ETF
GOVZ
$305M
| $760K | ﹤0.01% |
+20,714
| New | +$776K |
|
8278
Nathan's Famous
NATH
$399M
| $760K | ﹤0.01% |
7,541
-2,157
| -22% | -$214K |
|
8279
CALL
Birkenstock
BIRK
$6.6B
| $760K | ﹤0.01% |
21,200
-66,200
| -76% | -$2.58M |
|
8280
FT Vest US Equity Enhance & Moderate Buffer ETF September
XSEP
$136M
| $759K | ﹤0.01% |
18,126
-2,986
| -14% | -$127K |
|
|
GTOC
8281
Invesco Core Fixed Income ETF
GTOC
$355M
| $759K | ﹤0.01% |
30,205
-10,387
| -26% | -$264K |
|
|
GTM
8282
PUT
ZoomInfo Technologies
GTM
$1.17B
| $759K | ﹤0.01% |
126,900
-107,600
| -46% | -$791K |
|
|
NUVL
8283
PUT
DELISTED
Nuvalent
NUVL
| $758K | ﹤0.01% |
7,400
+1,700
| +30% | +$173K |
|
8284
LKQ Corp
LKQ
$6.64B
| $758K | ﹤0.01% |
25,811
-998,047
| -97% | -$32M |
|
|
KDEF
8285
PLUS Korea Defense Industry Index ETF
KDEF
$116M
| $757K | ﹤0.01% |
14,347
+9,612
| +203% | +$543K |
|
8286
CALL
Ryan Specialty Holdings
RYAN
$10.8B
| $756K | ﹤0.01% |
22,400
+7,000
| +45% | +$299K |
|
|
XRN
8287
Chiron Real Estate Inc
XRN
$485M
| $756K | ﹤0.01% |
22,845
+12,406
| +119% | +$436K |
|
8288
CALL
FuboTV Inc
FUBO
$306M
| $756K | ﹤0.01% |
79,876
-61,599
| -44% | -$1.22M |
|
8289
PUT
Vanguard Morningstar Small-Cap Growth ETF
VBK
$24.5B
| $756K | ﹤0.01% |
2,500
+900
| +56% | +$283K |
|
8290
Invesco S&P 500 QVM Multi-factor ETF
QVML
$1.53B
| $756K | ﹤0.01% |
19,745
+7,918
| +67% | +$317K |
|
|
IMSR
8291
PUT
Terrestrial Energy
IMSR
$586M
| $755K | ﹤0.01% |
125,800
+16,500
| +15% | +$131K |
|
|
MBX
8292
PUT
MBX Biosciences
MBX
$3.27B
| $755K | ﹤0.01% |
25,300
+16,700
| +194% | +$568K |
|
8293
PUT
MannKind Corp
MNKD
$1.38B
| $755K | ﹤0.01% |
308,200
+77,800
| +34% | +$347K |
|
8294
Anika Therapeutics
ANIK
$290M
| $755K | ﹤0.01% |
52,062
+4,996
| +11% | +$58K |
|
8295
PUT
EPR Properties
EPR
$4.61B
| $754K | ﹤0.01% |
15,100
-18,000
| -54% | -$990K |
|
|
GME.WS
8296
GameStop Corp Warrants
GME.WS
| $754K | ﹤0.01% |
195,424
+147,637
| +309% | +$577K |
|
8297
CALL
CryoPort
CYRX
$808M
| $754K | ﹤0.01% |
91,100
-61,200
| -40% | -$553K |
|
8298
PUT
Erie Indemnity
ERIE
$14.1B
| $754K | ﹤0.01% |
3,000
+1,700
| +131% | +$456K |
|
8299
PUT
Arcturus Therapeutics
ARCT
$279M
| $753K | ﹤0.01% |
97,600
+11,400
| +13% | +$83.2K |
|
8300
PUT
Red Rock Resorts
RRR
$3.65B
| $752K | ﹤0.01% |
14,100
-4,500
| -24% | -$274K |
|
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.