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 | |
|---|---|---|---|---|---|---|
2876
Arbe Robotics
ARBE
$86.2M
| $155K | ﹤0.01% |
+87,293
| New | +$125K |
|
2877
Ultralife
ULBI
$113M
| $155K | ﹤0.01% |
17,300
-19,036
| -52% | -$113K |
|
|
CMBM
2878
DELISTED
Cambium Networks
CMBM
| $155K | ﹤0.01% |
382,593
+288,064
| +305% | +$112K |
|
2879
OraSure Technologies
OSUR
$263M
| $153K | ﹤0.01% |
50,900
+2,177
| +4% | +$6.28K |
|
2880
SelectQuote
SLQT
$137M
| $149K | ﹤0.01% |
62,406
+8,375
| +16% | +$22K |
|
2881
Inovio Pharmaceuticals
INO
$129M
| $148K | ﹤0.01% |
72,727
+363
| +0.5% | +$696 |
|
2882
Cato Corp
CATO
$55.7M
| $148K | ﹤0.01% |
52,523
-9,660
| -16% | -$25.7K |
|
2883
International Money Express
IMXI
$429M
| $147K | ﹤0.01% |
14,554
+2,016
| +16% | +$23K |
|
|
ACRE
2884
Ares Commercial Real Estate
ACRE
$262M
| $145K | ﹤0.01% |
30,423
-79,604
| -72% | -$353K |
|
|
INTZ
2885
Intrusion
INTZ
$15.3M
| $144K | ﹤0.01% |
62,905
+22,906
| +57% | +$36K |
|
2886
Amneal Pharmaceuticals
AMRX
$6.19B
| $144K | ﹤0.01% |
17,745
-149,955
| -89% | -$1.13M |
|
2887
Cardlytics
CDLX
$25.2M
| $143K | ﹤0.01% |
8,704
-1,455
| -14% | -$25.1K |
|
2888
Xperi
XPER
$302M
| $143K | ﹤0.01% |
18,040
-43,676
| -71% | -$329K |
|
2889
Enel Chile
ENIC
$6.27B
| $142K | ﹤0.01% |
39,225
+19,200
| +96% | +$67.8K |
|
2890
Navitas Semiconductor
NVTS
$3.19B
| $140K | ﹤0.01% |
21,450
-400
| -2% | -$1.54K |
|
2891
Cineverse
CNVS
$60.4M
| $140K | ﹤0.01% |
29,215
+3,451
| +13% | +$11.4K |
|
2892
Kaltura
KLTR
$249M
| $139K | ﹤0.01% |
69,103
-52,951
| -43% | -$110K |
|
2893
Nuvectis Pharma
NVCT
$778M
| $135K | ﹤0.01% |
18,135
-1,958
| -10% | -$17.8K |
|
2894
Enovix
ENVX
$718M
| $134K | ﹤0.01% |
14,763
-142,258
| -91% | -$928K |
|
2895
Cars.com
CARS
$662M
| $131K | ﹤0.01% |
11,064
-14,438
| -57% | -$159K |
|
2896
ProPetro Holding
PUMP
$1.33B
| $131K | ﹤0.01% |
21,945
-115,656
| -84% | -$662K |
|
|
ITRG
2897
Integra Resources
ITRG
$580M
| $130K | ﹤0.01% |
+86,391
| New | +$139K |
|
2898
Coffee Holding Co
JVA
$19.8M
| $126K | ﹤0.01% |
+29,208
| New | +$108K |
|
2899
SurgePays
SURG
$4.26M
| $126K | ﹤0.01% |
40,371
+29,922
| +286% | +$82.8K |
|
2900
Prelude Therapeutics
PRLD
$516M
| $125K | ﹤0.01% |
154,977
-28,690
| -16% | -$24.8K |
|
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.