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 | |
|---|---|---|---|---|---|---|
|
PBK
12376
PowerBank Corp
PBK
$24.2M
| $47.5K | ﹤0.01% |
+88,674
| New | +$101K |
|
12377
CALL
Century Casinos
CNTY
$35.2M
| $47.3K | ﹤0.01% |
34,000
-5,300
| -13% | -$8.06K |
|
12378
CALL
N-able
NABL
$695M
| $47.2K | ﹤0.01% |
+10,100
| New | +$56.4K |
|
12379
CALL
Goldgroup Mining Inc.
GORO
$211M
| $47.2K | ﹤0.01% |
39,300
-30,200
| -43% | -$40.9K |
|
12380
CALL
Codexis
CDXS
$175M
| $46.8K | ﹤0.01% |
28,700
+11,200
| +64% | +$16K |
|
12381
PUT
Evolution Petroleum
EPM
$135M
| $46.7K | ﹤0.01% |
10,200
-5,500
| -35% | -$22.9K |
|
|
ELOG
12382
Eastern International Ltd
ELOG
$10.5M
| $46.6K | ﹤0.01% |
+50,160
| New | +$59.4K |
|
12383
CALL
Neonode
NEON
$14.8M
| $46.5K | ﹤0.01% |
33,200
-14,600
| -31% | -$25.3K |
|
12384
CALL
Pliant Therapeutics
PLRX
$66.9M
| $46.4K | ﹤0.01% |
36,800
-5,000
| -12% | -$6.31K |
|
|
STG
12385
Sunlands Technology
STG
$44.1M
| $46.2K | ﹤0.01% |
+13,162
| New | +$63.1K |
|
|
AMBR
12386
Amber International Holding Ltd
AMBR
$126M
| $46K | ﹤0.01% |
19,490
-31,505
| -62% | -$76.7K |
|
12387
PUT
Blend Labs
BLND
$367M
| $45.7K | ﹤0.01% |
26,900
-123,400
| -82% | -$264K |
|
12388
PUT
Ovid Therapeutics
OVID
$523M
| $45.5K | ﹤0.01% |
20,500
+3,800
| +23% | +$6.79K |
|
12389
PUT
Aldeyra Therapeutics
ALDX
$86.9M
| $45K | ﹤0.01% |
26,600
-95,100
| -78% | -$417K |
|
|
MVO
12390
DELISTED
MV Oil Trust
MVO
| $44.8K | ﹤0.01% |
19,835
-83,681
| -81% | -$157K |
|
12391
PUT
Offerpad Solutions
OPAD
$21.8M
| $44.8K | ﹤0.01% |
6,840
-1,010
| -13% | -$9.92K |
|
12392
Locafy
LCFY
$6.11M
| $44.7K | ﹤0.01% |
+10,262
| New | +$39.2K |
|
12393
Bridgeline Digital
BLIN
$13.9M
| $44.7K | ﹤0.01% |
56,085
-61,753
| -52% | -$52K |
|
12394
PUT
Perspective Therapeutics
CATX
$354M
| $44.6K | ﹤0.01% |
+10,700
| New | +$45.2K |
|
12395
PUT
Rimini Street
RMNI
$470M
| $44.6K | ﹤0.01% |
13,600
-10,800
| -44% | -$37.5K |
|
12396
PUT
Nkarta
NKTX
$165M
| $44.5K | ﹤0.01% |
21,100
-28,900
| -58% | -$64.6K |
|
12397
Ostin Technology Group
OST
| $44.1K | ﹤0.01% |
34,652
| – | – |
|
|
AISP
12398
PUT
Airship AI Holdings
AISP
$66.8M
| $43.8K | ﹤0.01% |
19,400
-50,400
| -72% | -$143K |
|
12399
Laird Superfood
LSF
$48.2M
| $43.8K | ﹤0.01% |
+20,373
| New | +$54.7K |
|
|
YSG
12400
CALL
Yatsen Holding
YSG
$319M
| $43.4K | ﹤0.01% |
+14,100
| New | +$56.7K |
|
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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.