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 | |
|---|---|---|---|---|---|---|
11826
MasterBrand
MBC
$1.88B
| $118K | ﹤0.01% |
14,151
-155,192
| -92% | -$1.68M |
|
11827
PUT
FTAI Infrastructure
FIP
$516M
| $118K | ﹤0.01% |
23,800
-29,200
| -55% | -$164K |
|
|
ZH
11828
Zhihu
ZH
$283M
| $118K | ﹤0.01% |
+41,384
| New | +$140K |
|
11829
PUT
Grid Dynamics Holdings
GDYN
$630M
| $117K | ﹤0.01% |
20,600
+9,200
| +81% | +$67.7K |
|
|
SBXD
11830
SilverBox Corp IV
SBXD
$275M
| $117K | ﹤0.01% |
10,964
+333
| +3% | +$3.55K |
|
|
KZR
11831
PUT
DELISTED
Kezar Life Sciences
KZR
| $117K | ﹤0.01% |
+15,800
| New | +$103K |
|
|
PLRZ
11832
Polyrizon Ltd
PLRZ
$21.2M
| $117K | ﹤0.01% |
+10,149
| New | +$139K |
|
11833
CALL
Melco Resorts & Entertainment
MLCO
$2.16B
| $117K | ﹤0.01% |
20,600
-138,700
| -87% | -$840K |
|
11834
CALL
Perion Network
PERI
$379M
| $117K | ﹤0.01% |
11,700
-145,200
| -93% | -$1.31M |
|
|
RTAC
11835
Renatus Tactical Acquisition Corp I
RTAC
$326M
| $117K | ﹤0.01% |
+11,364
| New | +$120K |
|
|
PCAP
11836
ProCap Acquisition Corp
PCAP
$328M
| $117K | ﹤0.01% |
11,452
+685
| +6% | +$6.98K |
|
|
LIMN
11837
Liminatus Pharma
LIMN
$7.49M
| $116K | ﹤0.01% |
677,518
+606,588
| +855% | +$323K |
|
11838
PUT
Hafnia
HAFN
$3.66B
| $116K | ﹤0.01% |
15,300
-16,200
| -51% | -$107K |
|
|
HELP
11839
PUT
Cybin Inc
HELP
$625M
| $116K | ﹤0.01% |
24,200
-2,500
| -9% | -$16.2K |
|
11840
Century Casinos
CNTY
$34.3M
| $116K | ﹤0.01% |
83,351
+23,962
| +40% | +$36.4K |
|
11841
CALL
OneSpan
OSPN
$601M
| $116K | ﹤0.01% |
+11,000
| New | +$125K |
|
11842
CALL
RE/MAX Holdings
RMAX
$258M
| $116K | ﹤0.01% |
+20,100
| New | +$139K |
|
11843
CALL
C4 Therapeutics
CCCC
$476M
| $116K | ﹤0.01% |
44,000
+31,900
| +264% | +$75.1K |
|
11844
CALL
Liberty Latin America Class C
LILAK
$1.66B
| $116K | ﹤0.01% |
+14,410
| New | +$103K |
|
11845
PUT
Alight
ALIT
$364M
| $115K | ﹤0.01% |
9,890
+3,945
| +66% | +$94K |
|
11846
CALL
Atea Pharmaceuticals
AVIR
$404M
| $115K | ﹤0.01% |
+21,400
| New | +$98.3K |
|
11847
Natural Alternatives International
NAII
$13.7M
| $115K | ﹤0.01% |
43,708
+29,081
| +199% | +$97K |
|
11848
CALL
Hagerty
HGTY
$1.3B
| $115K | ﹤0.01% |
+10,900
| New | +$127K |
|
11849
PUT
Leggett & Platt
LEG
$1.3B
| $115K | ﹤0.01% |
11,600
-93,700
| -89% | -$1.07M |
|
|
MSTW
11850
PUT
Roundhill MSTR WeeklyPay ETF
MSTW
$35.7M
| $115K | ﹤0.01% |
18,300
-1,500
| -8% | -$12.4K |
|
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.