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 | |
|---|---|---|---|---|---|---|
701
The RealReal
REAL
$1.35B
| $11.8M | 0.02% |
2,465,966
+234,260
| +10% | +$1.29M |
|
702
Logitech
LOGI
$13.9B
| $11.8M | 0.02% |
130,393
-138,648
| -52% | -$11.2M |
|
703
Albemarle Corp Depositary Shares
ALB.PRA
$2.64B
| $11.7M | 0.02% |
364,603
-454,524
| -55% | -$13.9M |
|
704
PUT
Freshpet
FRPT
$3.65B
| $11.7M | 0.02% |
171,700
| – | – |
|
705
Molson Coors Class B
TAP
$8.1B
| $11.6M | 0.02% |
+241,937
| New | +$13.3M |
|
706
Innospec
IOSP
$2.33B
| $11.6M | 0.02% |
138,239
+59,793
| +76% | +$5.23M |
|
707
Armstrong World Industries
AWI
$7.52B
| $11.5M | 0.02% |
71,025
+18,555
| +35% | +$2.76M |
|
708
iShares US Insurance ETF
IAK
$533M
| $11.5M | 0.02% |
+85,600
| New | +$11.4M |
|
709
Sportradar
SRAD
$3.88B
| $11.5M | 0.02% |
409,589
+183,196
| +81% | +$4.35M |
|
710
Herbalife
HLF
$1.34B
| $11.5M | 0.02% |
1,328,739
+33,533
| +3% | +$249K |
|
711
Extreme Networks
EXTR
$2.92B
| $11.4M | 0.02% |
635,389
-179,831
| -22% | -$2.65M |
|
|
PPL
712
PUT
PPL Corp
PPL
$26.1B
| $11.4M | 0.02% |
335,400
| – | – |
|
|
BOW
713
Bowhead Specialty Holdings
BOW
$1.1B
| $11.4M | 0.02% |
302,486
+98,430
| +48% | +$3.77M |
|
714
CVR Energy
CVI
$3.87B
| $11.4M | 0.02% |
422,734
-431,715
| -51% | -$9.5M |
|
|
LTC
715
LTC Properties
LTC
$2.17B
| $11.3M | 0.02% |
327,778
+129,442
| +65% | +$4.55M |
|
716
GeneDx Holdings
WGS
$2.56B
| $11.3M | 0.02% |
122,749
+94,391
| +333% | +$7.41M |
|
717
Suzano
SUZ
$11.1B
| $11.2M | 0.02% |
1,193,855
+41,030
| +4% | +$376K |
|
718
Provident Financial Services
PFS
$3.08B
| $11.2M | 0.02% |
640,745
+58,805
| +10% | +$976K |
|
719
Universal Corp
UVV
$1.14B
| $11.2M | 0.02% |
192,060
+146,044
| +317% | +$8.41M |
|
|
DX
720
Dynex Capital
DX
$3.23B
| $11.2M | 0.02% |
914,620
-132,316
| -13% | -$1.61M |
|
721
GitLab
GTLB
$7.07B
| $11.2M | 0.02% |
247,532
+200,990
| +432% | +$9.19M |
|
722
Rogers Communications
RCI
$19.5B
| $11.1M | 0.02% |
375,857
+363,447
| +2,929% | +$9.52M |
|
723
iShares Expanded Tech Sector ETF
IGM
$10.4B
| $11.1M | 0.02% |
99,000
-148,500
| -60% | -$14.6M |
|
724
A10 Networks
ATEN
$1.86B
| $11.1M | 0.02% |
573,164
+81,588
| +17% | +$1.39M |
|
725
Cracker Barrel
CBRL
$1.29B
| $11.1M | 0.02% |
181,534
-98,390
| -35% | -$4.96M |
|
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.