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 | |
|---|---|---|---|---|---|---|
1076
Qorvo
QRVO
$8.41B
| $5.75M | 0.01% |
67,774
-156,430
| -70% | -$11.3M |
|
1077
Community Health Systems
CYH
$424M
| $5.75M | 0.01% |
1,691,321
-118,304
| -7% | -$380K |
|
1078
Magnite
MGNI
$3.38B
| $5.74M | 0.01% |
237,826
+184,274
| +344% | +$2.71M |
|
1079
Warby Parker
WRBY
$3.24B
| $5.74M | 0.01% |
261,541
-13,098
| -5% | -$242K |
|
|
PLYM
1080
DELISTED
Plymouth Industrial REIT
PLYM
| $5.73M | 0.01% |
356,707
+66,631
| +23% | +$1.04M |
|
1081
RxSight
RXST
$260M
| $5.73M | 0.01% |
440,456
+321,566
| +270% | +$4.83M |
|
1082
Lazard
LAZ
$4.29B
| $5.73M | 0.01% |
119,332
-258,964
| -68% | -$10.8M |
|
1083
Dollar Tree
DLTR
$26.3B
| $5.72M | 0.01% |
57,800
-652,658
| -92% | -$56.3M |
|
1084
Central Pacific Financial
CPF
$972M
| $5.72M | 0.01% |
203,903
+14,336
| +8% | +$378K |
|
|
VACH
1085
DELISTED
Voyager Acquisition Corp
VACH
| $5.71M | 0.01% |
550,000
| – | – |
|
1086
Invesco Dorsey Wright Technology Momentum ETF
PTF
$572M
| $5.71M | 0.01% |
+83,600
| New | +$5.16M |
|
1087
Rush Street Interactive
RSI
$3.05B
| $5.7M | 0.01% |
382,877
+370,001
| +2,874% | +$4.59M |
|
|
DAAQ
1088
Digital Asset Acquisition Corp
DAAQ
$240M
| $5.7M | 0.01% |
+543,750
| New | +$5.75M |
|
|
VRE
1089
DELISTED
Veris Residential
VRE
| $5.68M | 0.01% |
381,710
-5,490
| -1% | -$84.4K |
|
1090
Xeris Biopharma Holdings
XERS
$1.59B
| $5.67M | 0.01% |
1,214,699
+324,362
| +36% | +$1.49M |
|
1091
GCM Grosvenor
GCMG
$834M
| $5.67M | 0.01% |
490,506
+75,688
| +18% | +$937K |
|
1092
Integra LifeSciences
IART
$1.3B
| $5.66M | 0.01% |
461,485
+75,485
| +20% | +$1.1M |
|
1093
Opendoor
OPEN
$3.33B
| $5.65M | 0.01% |
10,956,952
+5,133,935
| +88% | +$3.71M |
|
|
GTEN
1094
Gores Holdings X
GTEN
| $5.62M | 0.01% |
+548,419
| New | +$5.62M |
|
|
WCLD
1095
WisdomTree Cloud Computing Fund
WCLD
$334M
| $5.62M | 0.01% |
+155,486
| New | +$5.28M |
|
1096
Celestica
CLS
$37.1B
| $5.61M | 0.01% |
35,954
+130
| +0.4% | +$13.8K |
|
|
AXON
1097
Axon Enterprise
AXON
$48.5B
| $5.59M | 0.01% |
6,751
-76,424
| -92% | -$52M |
|
|
PENG
1098
Penguin Solutions Inc
PENG
$2.6B
| $5.58M | 0.01% |
281,654
-178,661
| -39% | -$3.23M |
|
|
TRTX
1099
TPG RE Finance Trust
TRTX
$600M
| $5.56M | 0.01% |
720,109
-213,924
| -23% | -$1.63M |
|
|
HYAC
1100
DELISTED
Haymaker Acquisition Corp 4
HYAC
| $5.55M | 0.01% |
500,000
| – | – |
|
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.