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 | |
|---|---|---|---|---|---|---|
|
151
Mastercard
MA
$492B
| $562M | 0.09% |
1,125,671
+942,974
| +516% | +$497M |
|
152
CALL
Bank of America
BAC
$448B
| $562M | 0.09% |
11,519,100
+2,708,700
| +31% | +$140M |
|
|
153
CALL
Mastercard
MA
$492B
| $557M | 0.09% |
1,115,300
+459,300
| +70% | +$242M |
|
154
Constellation Brands
STZ
$22.9B
| $556M | 0.09% |
3,709,323
+2,931,378
| +377% | +$453M |
|
155
Gilead Sciences
GILD
$168B
| $555M | 0.09% |
3,982,185
+94,665
| +2% | +$13.3M |
|
156
GE Aerospace
GE
$382B
| $554M | 0.09% |
1,952,960
+653,663
| +50% | +$205M |
|
157
PUT
Vanguard S&P 500 ETF
VOO
$1.03T
| $549M | 0.09% |
918,500
+375,400
| +69% | +$235M |
|
158
CALL
Western Digital
WDC
$151B
| $547M | 0.09% |
2,023,900
-1,533,400
| -43% | -$400M |
|
159
PUT
Vertiv
VRT
$108B
| $544M | 0.09% |
2,171,100
-678,700
| -24% | -$151M |
|
160
Costco
COST
$419B
| $543M | 0.09% |
544,795
-69,823
| -11% | -$68M |
|
161
PUT
Chevron
CVX
$386B
| $540M | 0.09% |
2,609,306
+1,104,454
| +73% | +$201M |
|
162
PUT
Arm
ARM
$287B
| $537M | 0.09% |
3,550,400
-231,200
| -6% | -$28.1M |
|
163
CALL
Pinduoduo
PDD
$129B
| $530M | 0.09% |
5,183,600
+517,400
| +11% | +$54.4M |
|
164
T-Mobile US
TMUS
$192B
| $528M | 0.09% |
2,512,094
+1,473,318
| +142% | +$303M |
|
165
CALL
Nike
NKE
$61.3B
| $527M | 0.09% |
9,984,000
-290,100
| -3% | -$17.6M |
|
166
CALL
IBM
IBM
$225B
| $524M | 0.08% |
2,159,900
-794,800
| -27% | -$215M |
|
167
CALL
Lockheed Martin
LMT
$138B
| $522M | 0.08% |
864,200
+57,800
| +7% | +$35.6M |
|
|
CRWV
168
CALL
CoreWeave
CRWV
$49.3B
| $522M | 0.08% |
6,733,300
-4,320,800
| -39% | -$375M |
|
169
PUT
Robinhood
HOOD
$84.9B
| $521M | 0.08% |
7,512,700
-4,970,100
| -40% | -$436M |
|
170
Citigroup
C
$228B
| $515M | 0.08% |
4,545,334
+1,156,112
| +34% | +$132M |
|
171
CALL
Bloom Energy
BE
$62.2B
| $515M | 0.08% |
3,797,900
-379,200
| -9% | -$55.7M |
|
|
WCN
172
Waste Connections
WCN
$42B
| $506M | 0.08% |
3,113,950
+2,079,195
| +201% | +$347M |
|
173
CALL
United Airlines
UAL
$41B
| $501M | 0.08% |
5,445,000
+2,524,300
| +86% | +$265M |
|
174
CALL
AST SpaceMobile
ASTS
$21.4B
| $499M | 0.08% |
6,018,900
+1,117,700
| +23% | +$105M |
|
175
CALL
Palo Alto Networks
PANW
$313B
| $498M | 0.08% |
3,107,580
+746,080
| +32% | +$125M |
|
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.