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 | |
|---|---|---|---|---|---|---|
|
TOKE
12251
CALL
DELISTED
Cambria Cannabis ETF
TOKE
| $63.9K | ﹤0.01% |
+12,500
| New | +$71.5K |
|
12252
PUT
iHeartMedia
IHRT
$464M
| $63.7K | ﹤0.01% |
+21,800
| New | +$72.2K |
|
12253
BioVie
BIVI
$11.8M
| $63.4K | ﹤0.01% |
45,292
+27,142
| +150% | +$34.9K |
|
|
NXDR
12254
CALL
Nextdoor Holdings
NXDR
$998M
| $63.1K | ﹤0.01% |
45,100
-156,600
| -78% | -$272K |
|
12255
PUT
Rekor Systems
REKR
$97.6M
| $63K | ﹤0.01% |
76,800
-85,200
| -53% | -$91.2K |
|
12256
PUT
Five Point Holdings
FPH
$372M
| $62.9K | ﹤0.01% |
+13,000
| New | +$69.8K |
|
|
BLDP
12257
PUT
Ballard Power Systems
BLDP
$790M
| $62.7K | ﹤0.01% |
25,900
-24,900
| -49% | -$59.4K |
|
|
GSOL
12258
CALL
Grayscale Solana Staking ETF
GSOL
$95.5M
| $62.5K | ﹤0.01% |
+10,200
| New | +$76.8K |
|
12259
CALL
Spero Therapeutics
SPRO
$71.8M
| $62.5K | ﹤0.01% |
+26,700
| New | +$63.4K |
|
12260
PUT
Equillium
EQ
$127M
| $62.4K | ﹤0.01% |
31,200
-48,400
| -61% | -$79.6K |
|
12261
Mastech Digital
MHH
$95.3M
| $62.4K | ﹤0.01% |
+10,959
| New | +$72.3K |
|
12262
CALL
Spruce Power Holding Corp
SPRU
$33.6M
| $62.3K | ﹤0.01% |
15,200
-4,300
| -22% | -$19.9K |
|
|
AGNT
12263
PUT
AGNT Inc
AGNT
$752M
| $62.3K | ﹤0.01% |
10,400
-27,400
| -72% | -$212K |
|
12264
Nephros
NEPH
$50.9M
| $62.2K | ﹤0.01% |
20,888
+178
| +0.9% | +$711 |
|
12265
CALL
Xeris Biopharma Holdings
XERS
$1.52B
| $62.1K | ﹤0.01% |
10,700
+500
| +5% | +$3.31K |
|
12266
PUT
Lexicon Pharmaceuticals
LXRX
$1.04B
| $61.9K | ﹤0.01% |
39,700
-45,600
| -53% | -$66.3K |
|
|
SMUP
12267
CALL
T-REX 2X Long SMR Daily Target ETF
SMUP
$8.82M
| $61.9K | ﹤0.01% |
+5,952
| New | +$148K |
|
|
VIVO
12268
CALL
VivoPower PLC
VIVO
$141M
| $61.9K | ﹤0.01% |
26,900
-18,200
| -40% | -$40.6K |
|
12269
CALL
Universal Electronics
UEIC
$66.6M
| $61.8K | ﹤0.01% |
+15,000
| New | +$59.6K |
|
|
MTLS
12270
CALL
Materialise
MTLS
$397M
| $61.8K | ﹤0.01% |
+12,500
| New | +$67.4K |
|
|
FOFO
12271
Hang Feng Technology Innovation Co
FOFO
$19.2M
| $61.7K | ﹤0.01% |
+14,617
| New | +$72.8K |
|
12272
IRIDEX
IRIX
$14.3M
| $61.5K | ﹤0.01% |
60,851
+26,456
| +77% | +$36.1K |
|
12273
CALL
Lexeo Therapeutics
LXEO
$407M
| $61.4K | ﹤0.01% |
+10,700
| New | +$75.8K |
|
|
FENG
12274
Phoenix New Media
FENG
$18.4M
| $61.3K | ﹤0.01% |
35,036
+14,837
| +73% | +$26.8K |
|
|
LX
12275
PUT
LexinFintech Holdings
LX
$236M
| $61.3K | ﹤0.01% |
28,100
-23,500
| -46% | -$65.9K |
|
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.