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 | |
|---|---|---|---|---|---|---|
|
DYNC
1101
Dynamix Corp
DYNC
$241M
| $5.55M | 0.01% |
543,750
| – | – |
|
|
EGHAU
1102
EGH Acquisition Corp Unit
EGHAU
| $5.54M | 0.01% |
+543,750
| New | +$5.5M |
|
|
SVCC
1103
Stellar V Capital Corp
SVCC
$230M
| $5.53M | 0.01% |
543,750
| – | – |
|
|
RAAQ
1104
DELISTED
Real Asset Acquisition Corp
RAAQ
| $5.52M | 0.01% |
+543,750
| New | +$5.52M |
|
1105
Genius Sports
GENI
$2.14B
| $5.49M | 0.01% |
527,561
+207,770
| +65% | +$2.08M |
|
1106
BlackRock TCP Capital
TCPC
$342M
| $5.48M | 0.01% |
712,321
+57,788
| +9% | +$424K |
|
1107
SK Telecom
SKM
$15.4B
| $5.48M | 0.01% |
+234,767
| New | +$5.06M |
|
|
SBXD
1108
SilverBox Corp IV
SBXD
$285M
| $5.48M | 0.01% |
500,000
| – | – |
|
1109
First Industrial Realty Trust
FR
$8.41B
| $5.47M | 0.01% |
113,737
-229,499
| -67% | -$11.2M |
|
|
PMTR
1110
Perimeter Acquisition Corp I
PMTR
$321M
| $5.46M | 0.01% |
+537,309
| New | +$5.45M |
|
1111
CubeSmart
CUBE
$9.21B
| $5.46M | 0.01% |
+128,468
| New | +$5.33M |
|
1112
West Fraser Timber
WFG
$5.37B
| $5.46M | 0.01% |
+74,482
| New | +$5.54M |
|
1113
National Healthcare
NHC
$3.58B
| $5.45M | 0.01% |
50,919
-3,779
| -7% | -$378K |
|
|
LIF
1114
Life360
LIF
$3.61B
| $5.45M | 0.01% |
+83,500
| New | +$4.29M |
|
|
DHIL
1115
DELISTED
Diamond Hill
DHIL
| $5.44M | 0.01% |
37,421
+21,184
| +130% | +$2.91M |
|
1116
Dimensional US Core Equity Market ETF
DFAU
$12.7B
| $5.42M | 0.01% |
+127,900
| New | +$5.01M |
|
1117
Eos Energy Enterprises
EOSE
$1.26B
| $5.4M | 0.01% |
1,055,312
+976,923
| +1,246% | +$4.79M |
|
1118
Teva Pharmaceuticals
TEVA
$43B
| $5.36M | 0.01% |
319,894
+183,097
| +134% | +$2.95M |
|
1119
Fox Class A
FOXA
$29B
| $5.34M | 0.01% |
95,354
-168,765
| -64% | -$8.9M |
|
1120
CRH
CRH
$63.7B
| $5.34M | 0.01% |
58,159
+31,709
| +120% | +$2.89M |
|
1121
East-West Bancorp
EWBC
$17.7B
| $5.33M | 0.01% |
52,780
+23,375
| +79% | +$2.07M |
|
1122
Array Technologies
ARRY
$704M
| $5.33M | 0.01% |
902,605
+392,618
| +77% | +$2.38M |
|
1123
SLM Corp
SLM
$4.95B
| $5.32M | 0.01% |
+162,300
| New | +$4.96M |
|
1124
Boise Cascade
BCC
$2.87B
| $5.32M | 0.01% |
61,254
+47,252
| +337% | +$4.28M |
|
1125
Texas Instruments
TXN
$236B
| $5.32M | 0.01% |
+25,600
| New | +$4.54M |
|
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.