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 | |
|---|---|---|---|---|---|---|
1701
First Horizon
FHN
$11.6B
| $2.19M | ﹤0.01% |
103,518
-95,650
| -48% | -$1.82M |
|
1702
Fair Isaac
FICO
$24.8B
| $2.19M | ﹤0.01% |
1,200
-10,150
| -89% | -$19.1M |
|
1703
Expedia Group
EXPE
$40.2B
| $2.19M | ﹤0.01% |
13,000
-9,000
| -41% | -$1.46M |
|
|
NOEM
1704
CO2 Energy Transition Corp
NOEM
| $2.19M | ﹤0.01% |
217,499
| – | – |
|
1705
Chegg
CHGG
$86.7M
| $2.19M | ﹤0.01% |
1,808,135
-21,629
| -1% | -$20K |
|
1706
Bio-Techne
TECH
$11.3B
| $2.18M | ﹤0.01% |
42,400
+16,100
| +61% | +$809K |
|
1707
Fidelity Small-Mid Multifactor ETF
FSMD
$2.56B
| $2.18M | ﹤0.01% |
+52,600
| New | +$2.07M |
|
|
LCCC
1708
Lakeshore Acquisition III Corp
LCCC
| $2.18M | ﹤0.01% |
+217,499
| New | +$2.18M |
|
1709
Rocket Lab Corp
RKLB
$43.2B
| $2.17M | ﹤0.01% |
60,753
-786,158
| -93% | -$19.2M |
|
1710
J.M. Smucker
SJM
$13.4B
| $2.16M | ﹤0.01% |
21,971
-135,794
| -86% | -$14.9M |
|
1711
AutoZone
AZO
$49.2B
| $2.16M | ﹤0.01% |
581
-529
| -48% | -$1.95M |
|
1712
Shore Bancshares
SHBI
$771M
| $2.16M | ﹤0.01% |
137,166
-33,552
| -20% | -$472K |
|
1713
Climb Global Solutions
CLMB
$517M
| $2.16M | ﹤0.01% |
+80,660
| New | +$2.13M |
|
1714
Old Second Bancorp
OSBC
$1.28B
| $2.15M | ﹤0.01% |
121,451
+3,989
| +3% | +$65K |
|
1715
Zoetis
ZTS
$31.7B
| $2.15M | ﹤0.01% |
13,814
-89,105
| -87% | -$14.1M |
|
1716
Empire State Realty Trust
ESRT
$822M
| $2.15M | ﹤0.01% |
266,236
+10,866
| +4% | +$83.2K |
|
1717
Fidelity Momentum Factor ETF
FDMO
$906M
| $2.15M | ﹤0.01% |
+28,300
| New | +$1.95M |
|
1718
Gossamer Bio
GOSS
$95.2M
| $2.15M | ﹤0.01% |
1,745,127
+469,715
| +37% | +$512K |
|
1719
Loar Holdings
LOAR
$6.83B
| $2.14M | ﹤0.01% |
+24,885
| New | +$2.15M |
|
1720
Tenaris
TS
$27.5B
| $2.14M | ﹤0.01% |
57,194
-20,600
| -26% | -$706K |
|
1721
Editas Medicine
EDIT
$501M
| $2.13M | ﹤0.01% |
969,926
-279,849
| -22% | -$458K |
|
1722
Global X SuperDividend US ETF
DIV
$793M
| $2.13M | ﹤0.01% |
121,300
+60,300
| +99% | +$1.06M |
|
1723
Generac Holdings
GNRC
$12B
| $2.13M | ﹤0.01% |
14,876
-218,261
| -94% | -$26.6M |
|
1724
Wabash National
WNC
$493M
| $2.13M | ﹤0.01% |
200,391
-134,537
| -40% | -$1.29M |
|
1725
Artesian Resources
ARTNA
$363M
| $2.13M | ﹤0.01% |
63,399
+2,031
| +3% | +$68.8K |
|
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.