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 | |
|---|---|---|---|---|---|---|
1476
Carter's
CRI
$1.26B
| $3.04M | 0.01% |
+101,025
| New | +$3.42M |
|
1477
Vera Therapeutics
VERA
$2.43B
| $3.04M | 0.01% |
129,135
+119,584
| +1,252% | +$2.69M |
|
1478
Stellus Capital Investment Corp
SCM
$250M
| $3.04M | 0.01% |
218,132
-54,938
| -20% | -$726K |
|
1479
The Greenbrier Companies
GBX
$1.43B
| $3.03M | 0.01% |
65,797
-83,141
| -56% | -$3.72M |
|
1480
AXIS Capital
AXS
$7.25B
| $3.02M | 0.01% |
29,135
+12,511
| +75% | +$1.25M |
|
1481
World Kinect Corp
WKC
$1.82B
| $3.02M | 0.01% |
106,483
-113,064
| -51% | -$3M |
|
1482
Franklin Electric
FELE
$4.56B
| $3.02M | 0.01% |
+33,633
| New | +$2.95M |
|
1483
Sonos
SONO
$1.82B
| $3.02M | 0.01% |
+279,195
| New | +$2.72M |
|
1484
DHT Holdings
DHT
$3.18B
| $3.01M | 0.01% |
278,095
-132,651
| -32% | -$1.46M |
|
1485
Arrow Electronics
ARW
$10.3B
| $2.99M | 0.01% |
23,480
-111,763
| -83% | -$12.8M |
|
1486
PVH
PVH
$3.55B
| $2.98M | 0.01% |
43,400
-83,899
| -66% | -$6.09M |
|
1487
CoreCivic
CXW
$3.35B
| $2.96M | 0.01% |
140,518
-202,654
| -59% | -$4.37M |
|
1488
Doximity
DOCS
$4.51B
| $2.95M | 0.01% |
+48,062
| New | +$2.68M |
|
1489
Sempra
SRE
$55.3B
| $2.94M | 0.01% |
38,800
-86,525
| -69% | -$6.42M |
|
1490
BW LPG
BWLP
$3.74B
| $2.94M | 0.01% |
248,481
+8,202
| +3% | +$87.2K |
|
1491
ITT
ITT
$18.3B
| $2.94M | 0.01% |
18,718
-34,351
| -65% | -$4.89M |
|
|
MOFG
1492
DELISTED
MidWestOne Financial Group
MOFG
| $2.93M | 0.01% |
101,800
+37,406
| +58% | +$1.06M |
|
1493
United Fire Group
UFCS
$1.39B
| $2.92M | 0.01% |
101,772
+4,923
| +5% | +$138K |
|
1494
Barrett Business Services
BBSI
$810M
| $2.92M | 0.01% |
70,046
+13,226
| +23% | +$544K |
|
1495
Gogo Inc
GOGO
$347M
| $2.92M | 0.01% |
198,810
+120,310
| +153% | +$1.22M |
|
1496
Zegna
ZGN
$3.72B
| $2.92M | 0.01% |
341,348
-285,491
| -46% | -$2.3M |
|
1497
TriCo Bancshares
TCBK
$1.74B
| $2.91M | 0.01% |
71,939
+20,570
| +40% | +$808K |
|
1498
Eversource Energy
ES
$26.8B
| $2.91M | 0.01% |
45,688
-16,899
| -27% | -$1.04M |
|
1499
Redwire
RDW
$2.84B
| $2.9M | 0.01% |
178,069
-299,582
| -63% | -$3.9M |
|
1500
United Microelectronic
UMC
$47.8B
| $2.9M | 0.01% |
378,628
-905,816
| -71% | -$6.72M |
|
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.