John Overdeck Two Sigma Investments
John Overdeck is a co-founder of Two Sigma Investments, one of the world’s leading quantitative and technology-driven investment firms. Two Sigma applies data science, machine learning, and large-scale computing to markets across asset classes. Overdeck’s firm is a central reference point in discussions of modern systematic investing.
Top Buys
| Rank | Stock | Value |
|---|---|---|
| 1 |
iShares Expanded Tech-Software Sector ETF
IGV
|
+$312M |
| 2 |
UnitedHealth
UNH
|
+$286M |
| 3 |
Duolingo
DUOL
|
+$247M |
| 4 |
Aon
AON
|
+$226M |
| 5 |
Chubb
CB
|
+$221M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Broadcom
AVGO
|
+$338M |
| 2 |
Marvell Technology
MRVL
|
+$241M |
| 3 |
Advanced Micro Devices
AMD
|
+$240M |
| 4 |
ServiceNow
NOW
|
+$203M |
| 5 |
State Street SPDR S&P 500 ETF Trust
SPY
|
+$193M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 16.79% |
| 2 | Financials | 14.46% |
| 3 | Healthcare | 12.9% |
| 4 | Consumer Discretionary | 8.97% |
| 5 | Industrials | 8.82% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
|
XHLD
3051
TEN Holdings
XHLD
$92M
| $16.8K | ﹤0.01% |
+3,061
| New | +$31.4K |
|
3052
Maison Solutions
MSS
$1.26M
| $16.3K | ﹤0.01% |
368
-231
| -39% | -$10.9K |
|
3053
Workhorse Group
WKHS
$35.1M
| $15.9K | ﹤0.01% |
+1,206
| New | +$15.6K |
|
|
IOTR
3054
iOThree Ltd
IOTR
$12.3M
| $15.5K | ﹤0.01% |
+3,786
| New | +$28.9K |
|
|
GPUS
3055
Hyperscale Data Inc
GPUS
| $15K | ﹤0.01% |
+10,691
| New | +$39K |
|
|
IBO
3056
Impact BioMedical
IBO
$50.2M
| $14.7K | ﹤0.01% |
+22,700
| New | +$12.7K |
|
3057
AGAPE ATP
ATPC
$2.39M
| $14.7K | ﹤0.01% |
+222
| New | +$19.1K |
|
3058
ReWalk Robotics
LFWD
$20.6M
| $13.4K | ﹤0.01% |
+1,732
| New | +$26.5K |
|
|
RKTO
3059
Rocket One Inc
RKTO
$18M
| $13K | ﹤0.01% |
11,099
-148
| -1% | -$145 |
|
|
RVPH
3060
DELISTED
REVIVA PHARMA HLDGS INC
RVPH
| $10.8K | ﹤0.01% |
1,412
+378
| +37% | +$5.89K |
|
|
EONR
3061
EON Resources
EONR
$24.5M
| $9.97K | ﹤0.01% |
28,851
+559
| +2% | +$244 |
|
|
TRIB
3062
Trinity Biotech
TRIB
$8.13M
| $9.8K | ﹤0.01% |
502
| – | – |
|
3063
iPower
IPW
$540K
| $9.41K | ﹤0.01% |
7
-3
| -30% | -$3.64K |
|
3064
Direct Digital Holdings
DRCT
$1.83M
| $9.07K | ﹤0.01% |
+73
| New | +$9.32K |
|
|
MBAI
3065
Check-Cap
MBAI
$11M
| $8.78K | ﹤0.01% |
1,626
-15
| -0.9% | -$82 |
|
|
FAAS
3066
DELISTED
DigiAsia
FAAS
| $8.25K | ﹤0.01% |
14,459
-1,300
| -8% | -$567 |
|
|
NXTS
3067
Nexentis Technologies
NXTS
$2.56M
| $8.15K | ﹤0.01% |
145
+70
| +93% | +$4.7K |
|
3068
VerifyMe
VRME
$9.68M
| $7.93K | ﹤0.01% |
+10,528
| New | +$7.51K |
|
|
GTI
3069
DELISTED
Graphjet Technology
GTI
| $6.84K | ﹤0.01% |
1,090
+618
| +131% | +$3.97K |
|
|
CYPH
3070
Cypherpunk Technologies Inc
CYPH
$189M
| $4.13K | ﹤0.01% |
13,897
+1,059
| +8% | +$385 |
|
|
ADIL
3071
Adial Pharmaceuticals
ADIL
$13.1M
| $3.26K | ﹤0.01% |
+432
| New | +$6.52K |
|
|
CGBS
3072
DELISTED
Crown LNG Holdings Limited Ordinary Shares
CGBS
| $1.55K | ﹤0.01% |
+22,177
| New | +$2.43K |
|
3073
Healthcare Triangle
HCTI
$12.2M
| $915 | ﹤0.01% |
+2
| New | +$3.4K |
|
3074
PUT
American Airlines Group
AAL
$9.08B
| – | – |
-1,267,600
| Closed | -$13.4M |
|
3075
PUT
Airbnb
ABNB
$113B
| – | – |
-62,100
| Closed | -$7.42M |
|
Similar funds
John Overdeck's Q2 2025 Portfolio in Review
As of Q2 2025, John Overdeck held 3,681 positions worth $56.5B, up 21% from $46.8B the previous quarter. Its ten largest holdings account for 7.7% of the portfolio.
John Overdeck deployed $2.96B of net new capital in Q2 2025, opening 509 new positions and adding to 1,200 existing holdings. Its largest new stake was iShares Expanded Tech-Software Sector ETF: 3,154,300 shares worth $345M.
By sector, the portfolio is most concentrated in Technology at 17% of assets, down from 18% a quarter earlier, followed by Financials and Healthcare.
On the sell side, the largest reduction was Broadcom, an estimated $338M trimmed.
- John Overdeck's largest Q2 2025 buy was iShares Expanded Tech-Software Sector ETF: 3,154,300 shares worth $345M.
- John Overdeck added most to UnitedHealth in Q2 2025, an estimated $286M increase.
- John Overdeck's biggest Q2 2025 reduction was Broadcom, cutting an estimated $338M.
- John Overdeck fully exited State Street Utilities Select Sector SPDR ETF in Q2 2025, selling an estimated $134M.
- John Overdeck's ten largest holdings make up 7.7% of its $56.5B portfolio in Q2 2025.
- John Overdeck opened 509 new positions and closed 531 in Q2 2025.
- John Overdeck's portfolio value rose 21% quarter-over-quarter to $56.5B.
Based on Two Sigma Investments's 13F filing for Q2 2025, filed 14 Aug 2025.