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 | |
|---|---|---|---|---|---|---|
|
NNDM
2976
Nano Dimension
NNDM
$320M
| $60.9K | ﹤0.01% |
37,596
+9,954
| +36% | +$15.2K |
|
2977
Richtech Robotics
RR
$362M
| $60.5K | ﹤0.01% |
31,044
+4,158
| +15% | +$8.73K |
|
2978
Amesite
AMST
$7.07M
| $58K | ﹤0.01% |
+21,579
| New | +$54.3K |
|
2979
Relmada Therapeutics
RLMD
$476M
| $57.3K | ﹤0.01% |
95,417
-75,127
| -44% | -$38.6K |
|
2980
TOP Financial Group
TOP
$1.8B
| $57.1K | ﹤0.01% |
9,322
-2,425
| -21% | -$14.8K |
|
2981
Riverview Bancorp
RVSB
$103M
| $55.3K | ﹤0.01% |
+10,056
| New | +$58.2K |
|
|
HEPS
2982
D-Market Electronic Services & Trading
HEPS
$990M
| $54.6K | ﹤0.01% |
+20,238
| New | +$55K |
|
2983
Xilio Therapeutics
XLO
$60.4M
| $53.1K | ﹤0.01% |
5,574
-431
| -7% | -$4.55K |
|
|
BTLN
2984
Brightline Interactive
BTLN
$21.9M
| $51.6K | ﹤0.01% |
37,928
-11,533
| -23% | -$14.7K |
|
2985
Werewolf Therapeutics
HOWL
$43.5M
| $49.5K | ﹤0.01% |
45,422
-12,710
| -22% | -$13.1K |
|
2986
Zevia
ZVIA
$99.5M
| $49K | ﹤0.01% |
15,232
-30,075
| -66% | -$79.1K |
|
|
CURR
2987
Currenc Group
CURR
$393M
| $48.5K | ﹤0.01% |
+59,536
| New | +$58.7K |
|
|
VXRT
2988
DELISTED
Vaxart
VXRT
| $48.3K | ﹤0.01% |
106,929
+93,105
| +674% | +$40.5K |
|
|
BGFV
2989
DELISTED
Big 5 Sporting Goods
BGFV
| $48.1K | ﹤0.01% |
33,844
-24,725
| -42% | -$26.5K |
|
|
MYSE
2990
Myseum.AI Inc
MYSE
$14M
| $47.9K | ﹤0.01% |
+18,857
| New | +$49.4K |
|
|
FNUC
2991
Frontier Nuclear and Minerals Inc
FNUC
$46.3M
| $47.1K | ﹤0.01% |
13,011
+9,869
| +314% | +$42.6K |
|
2992
Verrica Pharmaceuticals
VRCA
$81.4M
| $46.3K | ﹤0.01% |
8,729
-138
| -2% | -$743 |
|
2993
Surf Air Mobility
SRFM
$84.1M
| $46.2K | ﹤0.01% |
+12,533
| New | +$31.2K |
|
|
LVTX
2994
DELISTED
LAVA Therapeutics
LVTX
| $45.4K | ﹤0.01% |
34,412
-23,303
| -40% | -$29.7K |
|
|
GV
2995
DELISTED
Visionary Holdings
GV
| $45.4K | ﹤0.01% |
+28,535
| New | +$57.2K |
|
|
STAI
2996
DELISTED
ScanTech AI Systems
STAI
| $45K | ﹤0.01% |
+3,369
| New | +$83.2K |
|
|
RPTX
2997
DELISTED
Repare Therapeutics
RPTX
| $44.8K | ﹤0.01% |
+32,255
| New | +$42.1K |
|
2998
AmpliTech
AMPG
$103M
| $44.4K | ﹤0.01% |
+20,961
| New | +$39.8K |
|
2999
Goldgroup Mining
GORO
$270M
| $44K | ﹤0.01% |
72,055
-7,455
| -9% | -$4.05K |
|
3000
Protara Therapeutics
TARA
$226M
| $43.6K | ﹤0.01% |
14,404
-9,186
| -39% | -$31.7K |
|
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.