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 | |
|---|---|---|---|---|---|---|
|
CCRD
1951
DELISTED
CoreCard
CCRD
| $1.48M | ﹤0.01% |
51,184
+9,723
| +23% | +$228K |
|
1952
Playtika
PLTK
$934M
| $1.48M | ﹤0.01% |
313,172
+7,762
| +3% | +$38.2K |
|
|
SVC
1953
Service Properties Trust
SVC
$1.03B
| $1.48M | ﹤0.01% |
123,738
-8,306
| -6% | -$89.7K |
|
1954
Century Aluminum
CENX
$4.38B
| $1.47M | ﹤0.01% |
81,785
-110,717
| -58% | -$1.88M |
|
1955
Cerence
CRNC
$363M
| $1.47M | ﹤0.01% |
143,952
+61,776
| +75% | +$544K |
|
1956
FIVE9
FIVN
$2.41B
| $1.47M | ﹤0.01% |
55,453
-231,518
| -81% | -$6.03M |
|
1957
Burke & Herbert Financial Services Corp
BHRB
$1.45B
| $1.46M | ﹤0.01% |
24,479
-12,037
| -33% | -$667K |
|
1958
Greenlight Captial
GLRE
$505M
| $1.46M | ﹤0.01% |
101,338
+14,405
| +17% | +$198K |
|
1959
Bridgewater Bancshares
BWB
$589M
| $1.46M | ﹤0.01% |
91,453
+25,859
| +39% | +$379K |
|
1960
Levi Strauss
LEVI
$8.12B
| $1.45M | ﹤0.01% |
+78,628
| New | +$1.31M |
|
1961
SGHC Ltd
SGHC
$7.09B
| $1.45M | ﹤0.01% |
+132,286
| New | +$1.12M |
|
1962
nCino
NCNO
$2.28B
| $1.45M | ﹤0.01% |
+51,781
| New | +$1.29M |
|
1963
Jack in the Box
JACK
$320M
| $1.44M | ﹤0.01% |
82,604
+47,342
| +134% | +$1.06M |
|
1964
Myers Industries
MYE
$1.23B
| $1.44M | ﹤0.01% |
99,462
-45,832
| -32% | -$559K |
|
1965
Goldman Sachs Hedge Industry VIP ETF
GVIP
$571M
| $1.44M | ﹤0.01% |
+10,400
| New | +$1.3M |
|
1966
Acco Brands
ACCO
$389M
| $1.44M | ﹤0.01% |
401,126
-461,898
| -54% | -$1.71M |
|
1967
Golar LNG
GLNG
$5.31B
| $1.43M | ﹤0.01% |
34,788
-176,216
| -84% | -$6.95M |
|
1968
Primoris Services
PRIM
$4.03B
| $1.43M | ﹤0.01% |
18,328
-227,675
| -93% | -$15.4M |
|
1969
Lamar Advertising Co
LAMR
$15.4B
| $1.43M | ﹤0.01% |
11,761
+7,652
| +186% | +$888K |
|
1970
Tompkins Financial
TMP
$1.41B
| $1.43M | ﹤0.01% |
22,727
+1,941
| +9% | +$118K |
|
1971
Hallador Energy
HNRG
$771M
| $1.43M | ﹤0.01% |
90,024
+75,515
| +520% | +$1.17M |
|
1972
The RMR Group
RMR
$336M
| $1.42M | ﹤0.01% |
87,127
+28,039
| +47% | +$430K |
|
1973
Outset Medical
OM
$80.8M
| $1.42M | ﹤0.01% |
74,094
+57,806
| +355% | +$902K |
|
|
TEN
1974
Tsakos Energy Navigation Ltd
TEN
$1.27B
| $1.42M | ﹤0.01% |
73,865
-51,796
| -41% | -$908K |
|
1975
FRP Holdings
FRPH
$438M
| $1.41M | ﹤0.01% |
52,578
+27,723
| +112% | +$752K |
|
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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.