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
|
+$9.91B |
| 2 |
SPCX
SpaceX
SPCX
|
+$871M |
| 3 |
Eli Lilly
LLY
|
+$719M |
| 4 |
Amazon
AMZN
|
+$698M |
| 5 |
Netflix
NFLX
|
+$627M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Micron Technology
MU
|
+$3B |
| 2 |
State Street SPDR Dow Jones Industrial Average ETF Trust
DIA
|
+$1.54B |
| 3 |
TSMC
TSM
|
+$1.42B |
| 4 |
NVIDIA
NVDA
|
+$1.41B |
| 5 |
SNDK
Sandisk
SNDK
|
+$771M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 3.92% |
| 2 | Healthcare | 2.55% |
| 3 | Industrials | 2.24% |
| 4 | Financials | 2.13% |
| 5 | Consumer Discretionary | 1.76% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
3726
PUT
iShares Core Dividend Growth ETF
DGRO
$43.8B
| $8.78M | ﹤0.01% |
115,800
+14,700
| +15% | +$1.08M |
|
3727
PUT
Owens Corning
OC
$12.2B
| $8.77M | ﹤0.01% |
55,200
-132,300
| -71% | -$16.1M |
|
3728
Axcelis
ACLS
$4.33B
| $8.76M | ﹤0.01% |
46,239
+41,734
| +926% | +$6.19M |
|
3729
Myriad Genetics
MYGN
$290M
| $8.76M | ﹤0.01% |
1,533,684
+1,080,642
| +239% | +$4.91M |
|
3730
Iovance Biotherapeutics
IOVA
$3.16B
| $8.76M | ﹤0.01% |
2,104,990
-506,355
| -19% | -$1.92M |
|
|
SA
3731
Seabridge Gold
SA
$3.62B
| $8.75M | ﹤0.01% |
340,107
-464,700
| -58% | -$14M |
|
3732
PUT
GXO Logistics
GXO
$5.59B
| $8.75M | ﹤0.01% |
172,600
+111,100
| +181% | +$5.75M |
|
3733
CALL
Sanofi
SNY
$105B
| $8.75M | ﹤0.01% |
205,100
+22,900
| +13% | +$1.02M |
|
3734
Vestis
VSTS
$1.76B
| $8.75M | ﹤0.01% |
602,562
-357,640
| -37% | -$3.99M |
|
3735
PUT
Acuity Brands
AYI
$10.7B
| $8.74M | ﹤0.01% |
23,200
+5,600
| +32% | +$1.66M |
|
3736
CALL
Adeia
ADEA
$3.29B
| $8.74M | ﹤0.01% |
265,300
+164,000
| +162% | +$4.84M |
|
3737
CALL
Expeditors International
EXPD
$24.2B
| $8.74M | ﹤0.01% |
53,600
+21,100
| +65% | +$3.26M |
|
3738
International Flavors & Fragrances
IFF
$21.5B
| $8.72M | ﹤0.01% |
110,109
-992,404
| -90% | -$73.9M |
|
|
NB
3739
NioCorp Developments
NB
$744M
| $8.72M | ﹤0.01% |
1,809,673
-4,394,524
| -71% | -$24.1M |
|
3740
PUT
Dynatrace
DT
$14.2B
| $8.72M | ﹤0.01% |
198,600
+109,400
| +123% | +$4.26M |
|
|
BBT
3741
Beacon Financial Corp
BBT
$2.69B
| $8.71M | ﹤0.01% |
286,141
+126,907
| +80% | +$3.8M |
|
3742
CALL
Penske Automotive Group
PAG
$14.4B
| $8.7M | ﹤0.01% |
48,600
+29,900
| +160% | +$5M |
|
3743
Replimune Group
REPL
$1.4B
| $8.68M | ﹤0.01% |
784,233
+385,504
| +97% | +$2.36M |
|
3744
Energy Fuels
UUUU
$3.77B
| $8.67M | ﹤0.01% |
597,641
+313,930
| +111% | +$5.77M |
|
3745
Blend Labs
BLND
$352M
| $8.66M | ﹤0.01% |
5,062,868
+370,351
| +8% | +$591K |
|
3746
Establishment Labs
ESTA
$2.37B
| $8.65M | ﹤0.01% |
100,838
-448,449
| -82% | -$32.2M |
|
3747
PUT
SentinelOne
S
$7.92B
| $8.65M | ﹤0.01% |
509,500
+33,500
| +7% | +$515K |
|
3748
Boston Beer
SAM
$1.91B
| $8.64M | ﹤0.01% |
48,829
-4,385
| -8% | -$889K |
|
3749
Metallus
MTUS
$904M
| $8.64M | ﹤0.01% |
462,261
+227,940
| +97% | +$4.28M |
|
3750
PUT
Under Armour
UAA
$2.3B
| $8.64M | ﹤0.01% |
1,351,700
-83,100
| -6% | -$493K |
|
Similar funds
Ken Griffin's Q2 2026 Portfolio in Review
As of Q2 2026, Ken Griffin held 15,447 positions worth $875B, up 41% from $618B the previous quarter. Its ten largest holdings account for 23% of the portfolio.
Ken Griffin deployed $103B of net new capital in Q2 2026, opening 2,575 new positions and adding to 6,089 existing holdings. Its largest new stake was SpaceX: 5,129,884 shares worth $876M.
By sector, the portfolio is most concentrated in Technology at 3.9% of assets, down from 4.5% a quarter earlier, followed by Healthcare and Industrials.
On the sell side, the largest reduction was Micron Technology, an estimated $3B trimmed.
- Ken Griffin's largest Q2 2026 buy was SpaceX: 5,129,884 shares worth $876M.
- Ken Griffin added most to iShares Core S&P 500 ETF in Q2 2026, an estimated $9.91B increase.
- Ken Griffin's biggest Q2 2026 reduction was Micron Technology, cutting an estimated $3B.
- Ken Griffin fully exited iShares 7-10 Year Treasury Bond ETF in Q2 2026, selling an estimated $325M.
- Ken Griffin's ten largest holdings make up 23% of its $875B portfolio in Q2 2026.
- Ken Griffin opened 2,575 new positions and closed 1,872 in Q2 2026.
- Ken Griffin's portfolio value rose 41% quarter-over-quarter to $875B.
Based on Citadel Advisors's 13F filing for Q2 2026, filed 14 Aug 2026.