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 | |
|---|---|---|---|---|---|---|
2001
Gorman-Rupp
GRC
$2.03B
| $1.35M | ﹤0.01% |
36,650
+1,511
| +4% | +$54.3K |
|
2002
American Coastal Insurance
ACIC
$444M
| $1.34M | ﹤0.01% |
120,918
+8,816
| +8% | +$97.1K |
|
2003
iShares US Transportation ETF
IYT
$2.28B
| $1.34M | ﹤0.01% |
+19,600
| New | +$1.25M |
|
2004
Lufax Holding
LU
$1.16B
| $1.34M | ﹤0.01% |
479,978
-809,911
| -63% | -$2.29M |
|
2005
GlobalFoundries
GFS
$25.2B
| $1.33M | ﹤0.01% |
34,789
-13,971
| -29% | -$507K |
|
2006
SLB Ltd
SLB
$79.1B
| $1.33M | ﹤0.01% |
39,312
-520,960
| -93% | -$18.1M |
|
|
BBUC
2007
Brookfield Business Corp Class A Subordinate Voting Shares
BBUC
$5.81B
| $1.33M | ﹤0.01% |
42,531
+27,427
| +182% | +$749K |
|
2008
Village Super Market
VLGEA
$653M
| $1.32M | ﹤0.01% |
34,395
-783
| -2% | -$28.9K |
|
2009
Mid Penn Bancorp
MPB
$937M
| $1.32M | ﹤0.01% |
46,950
-33,349
| -42% | -$900K |
|
2010
Dorian LPG
LPG
$2.17B
| $1.32M | ﹤0.01% |
54,277
-47,598
| -47% | -$1.05M |
|
2011
Atea Pharmaceuticals
AVIR
$436M
| $1.32M | ﹤0.01% |
366,612
+114,863
| +46% | +$343K |
|
2012
Calix
CALX
$2.51B
| $1.32M | ﹤0.01% |
24,789
+6,700
| +37% | +$287K |
|
2013
Kirby Corp
KEX
$7.27B
| $1.32M | ﹤0.01% |
11,598
-94,166
| -89% | -$9.88M |
|
|
PCSC
2014
DELISTED
Perceptive Capital Solutions
PCSC
| $1.32M | ﹤0.01% |
123,838
| – | – |
|
|
EFC
2015
Ellington Financial
EFC
$1.75B
| $1.31M | ﹤0.01% |
101,213
-186,848
| -65% | -$2.38M |
|
|
OBE
2016
Obsidian Energy
OBE
$735M
| $1.31M | ﹤0.01% |
236,826
+32,446
| +16% | +$161K |
|
2017
Alerus Financial
ALRS
$824M
| $1.31M | ﹤0.01% |
60,567
-7,524
| -11% | -$151K |
|
2018
Federal Realty Investment Trust
FRT
$10.2B
| $1.31M | ﹤0.01% |
13,782
-17,833
| -56% | -$1.69M |
|
2019
Seacoast Banking Corp of Florida
SBCF
$3.29B
| $1.31M | ﹤0.01% |
+47,284
| New | +$1.17M |
|
2020
Mueller Water Products
MWA
$3.89B
| $1.31M | ﹤0.01% |
54,319
-40,388
| -43% | -$999K |
|
2021
TTM Technologies
TTMI
$11.8B
| $1.31M | ﹤0.01% |
31,970
-56,276
| -64% | -$1.56M |
|
2022
Goosehead Insurance
GSHD
$2.57B
| $1.3M | ﹤0.01% |
12,300
-4,116
| -25% | -$436K |
|
2023
Republic Bancorp
RBCAA
$1.85B
| $1.3M | ﹤0.01% |
17,715
+13,239
| +296% | +$905K |
|
|
WCBR
2024
WisdomTree Cybersecurity Fund
WCBR
$125M
| $1.29M | ﹤0.01% |
40,500
-9,100
| -18% | -$265K |
|
2025
Lucid Motors
LCID
$2.07B
| $1.29M | ﹤0.01% |
61,243
-521,517
| -89% | -$12.5M |
|
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.