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 | |
|---|---|---|---|---|---|---|
1676
Constellation Energy
CEG
$97.4B
| $2.25M | ﹤0.01% |
6,963
-6,461
| -48% | -$1.71M |
|
1677
Hanmi Financial
HAFC
$921M
| $2.24M | ﹤0.01% |
90,919
-21,647
| -19% | -$495K |
|
|
ADAM
1678
Adamas Trust
ADAM
$881M
| $2.24M | ﹤0.01% |
334,810
+3,529
| +1% | +$22.4K |
|
1679
Shoals Technologies Group
SHLS
$1.17B
| $2.24M | ﹤0.01% |
527,345
+332,017
| +170% | +$1.44M |
|
1680
Methode Electronics
MEI
$573M
| $2.24M | ﹤0.01% |
235,591
-43,066
| -15% | -$316K |
|
1681
First Trust Small Cap Growth AlphaDEX Fund
FYC
$1.41B
| $2.24M | ﹤0.01% |
+28,100
| New | +$2.02M |
|
1682
Blackstone Mortgage Trust
BXMT
$2.37B
| $2.23M | ﹤0.01% |
116,091
-52,010
| -31% | -$986K |
|
|
SFD
1683
Smithfield Foods
SFD
$8.7B
| $2.23M | ﹤0.01% |
94,905
+7,337
| +8% | +$162K |
|
1684
Dillards
DDS
$10B
| $2.23M | ﹤0.01% |
5,326
-2,853
| -35% | -$1.06M |
|
1685
Kinsale Capital Group
KNSL
$8.94B
| $2.22M | ﹤0.01% |
+4,596
| New | +$2.14M |
|
1686
CNB Financial Corp
CCNE
$1.01B
| $2.22M | ﹤0.01% |
97,254
+26,018
| +37% | +$572K |
|
|
HSPT
1687
DELISTED
Horizon Space Acquisition II Corp
HSPT
| $2.22M | ﹤0.01% |
217,499
| – | – |
|
|
GSRT
1688
DELISTED
GSR III Acquisition Corp
GSRT
| $2.22M | ﹤0.01% |
205,833
| – | – |
|
1689
InterContinental Hotels
IHG
$24.1B
| $2.22M | ﹤0.01% |
+19,252
| New | +$2.16M |
|
1690
Leonardo DRS
DRS
$10.3B
| $2.22M | ﹤0.01% |
47,765
-4,404
| -8% | -$177K |
|
1691
Lincoln Electric
LECO
$15.4B
| $2.22M | ﹤0.01% |
10,690
-50,457
| -83% | -$9.65M |
|
1692
CION Investment
CION
$367M
| $2.21M | ﹤0.01% |
231,253
-101,164
| -30% | -$962K |
|
|
BRSP
1693
BrightSpire Capital
BRSP
$617M
| $2.21M | ﹤0.01% |
438,026
-122,586
| -22% | -$619K |
|
1694
Hess Midstream
HESM
$5.04B
| $2.21M | ﹤0.01% |
57,410
-147,584
| -72% | -$5.62M |
|
|
SKE
1695
Skeena Resources
SKE
$4.32B
| $2.21M | ﹤0.01% |
138,521
-140,100
| -50% | -$1.77M |
|
|
COLA
1696
Columbus Acquisition Corp
COLA
$48.1M
| $2.2M | ﹤0.01% |
217,499
| – | – |
|
|
DCH
1697
Dauch Corp
DCH
$1.51B
| $2.2M | ﹤0.01% |
539,915
+439,569
| +438% | +$1.77M |
|
|
VNET
1698
VNET Group
VNET
$1.96B
| $2.2M | ﹤0.01% |
319,011
-2,100,117
| -87% | -$12.6M |
|
1699
Karat Packaging
KRT
$968M
| $2.2M | ﹤0.01% |
78,163
+63,644
| +438% | +$1.77M |
|
1700
Genworth Financial
GNW
$3.72B
| $2.2M | ﹤0.01% |
282,443
-265,456
| -48% | -$1.85M |
|
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.