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 | |
|---|---|---|---|---|---|---|
2551
CBRE Group
CBRE
$44B
| $453K | ﹤0.01% |
3,234
-6,562
| -67% | -$830K |
|
2552
AGNC Investment
AGNC
$13B
| $453K | ﹤0.01% |
49,252
-166,905
| -77% | -$1.49M |
|
2553
iHeartMedia
IHRT
$415M
| $452K | ﹤0.01% |
257,048
-113,859
| -31% | -$152K |
|
2554
Equity Lifestyle Properties
ELS
$12.8B
| $452K | ﹤0.01% |
7,333
-50,880
| -87% | -$3.24M |
|
2555
Nkarta
NKTX
$186M
| $451K | ﹤0.01% |
271,962
+55,524
| +26% | +$102K |
|
2556
RELX
RELX
$63.4B
| $451K | ﹤0.01% |
8,300
-52,212
| -86% | -$2.76M |
|
|
MRCC
2557
DELISTED
Monroe Capital Corp
MRCC
| $448K | ﹤0.01% |
70,368
-34,152
| -33% | -$229K |
|
2558
Vicor
VICR
$8.76B
| $447K | ﹤0.01% |
9,852
+1,289
| +15% | +$57.6K |
|
|
LAC
2559
Lithium Americas
LAC
$1.13B
| $447K | ﹤0.01% |
166,636
-68,521
| -29% | -$190K |
|
2560
Janus Henderson Small Cap Growth Alpha ETF
JSML
$374M
| $445K | ﹤0.01% |
+6,600
| New | +$412K |
|
2561
Eastern Bankshares
EBC
$5.17B
| $445K | ﹤0.01% |
+29,124
| New | +$437K |
|
2562
Corsair Gaming
CRSR
$1.18B
| $444K | ﹤0.01% |
47,057
+7,100
| +18% | +$57.3K |
|
2563
Diamondrock Hospitality Co
DRH
$2.61B
| $443K | ﹤0.01% |
+57,817
| New | +$431K |
|
2564
Verra Mobility
VRRM
$679M
| $442K | ﹤0.01% |
17,406
-149,627
| -90% | -$3.49M |
|
|
MAPS
2565
DELISTED
WM TECHNOLOGY INC A
MAPS
| $441K | ﹤0.01% |
492,462
-130,228
| -21% | -$140K |
|
2566
Exagen
XGN
$185M
| $440K | ﹤0.01% |
+63,000
| New | +$383K |
|
2567
Deluxe
DLX
$1.1B
| $439K | ﹤0.01% |
27,606
-54,397
| -66% | -$819K |
|
|
SNCR
2568
DELISTED
Synchronoss Technologies
SNCR
| $438K | ﹤0.01% |
63,987
-10,793
| -14% | -$89.6K |
|
2569
Kopin
KOPN
$881M
| $438K | ﹤0.01% |
286,433
-27,930
| -9% | -$36.4K |
|
2570
NOV
NOV
$7.04B
| $435K | ﹤0.01% |
34,975
-247,409
| -88% | -$3.12M |
|
2571
SELLAS Life Sciences
SLS
$2.89B
| $433K | ﹤0.01% |
197,642
+149,355
| +309% | +$229K |
|
2572
Xtrackers MSCI USA ESG Leaders Equity ETF
USSG
$591M
| $432K | ﹤0.01% |
+7,600
| New | +$398K |
|
2573
Telecom Argentina
TEO
$5.84B
| $432K | ﹤0.01% |
48,873
+34,977
| +252% | +$350K |
|
2574
Neumora Therapeutics
NMRA
$286M
| $431K | ﹤0.01% |
588,332
+314,018
| +114% | +$238K |
|
|
FSP
2575
Franklin Street Properties
FSP
$48.2M
| $428K | ﹤0.01% |
260,813
-169,529
| -39% | -$283K |
|
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.