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 | |
|---|---|---|---|---|---|---|
1901
Fastenal
FAST
$57.7B
| $1.6M | ﹤0.01% |
38,161
-26,173
| -41% | -$1.06M |
|
|
LOMA
1902
Loma Negra
LOMA
$1.14B
| $1.6M | ﹤0.01% |
145,973
-63,447
| -30% | -$734K |
|
1903
Principal Exchange-Traded Funds Principal Value ETF
PY
$246M
| $1.6M | ﹤0.01% |
+32,300
| New | +$1.53M |
|
1904
Colony Bankcorp
CBAN
$449M
| $1.6M | ﹤0.01% |
96,972
+9,816
| +11% | +$152K |
|
1905
VanEck Semiconductor ETF
SMH
$65.9B
| $1.59M | ﹤0.01% |
5,716
-97,270
| -94% | -$22.6M |
|
1906
American Water Works
AWK
$27.3B
| $1.59M | ﹤0.01% |
11,457
+300
| +3% | +$43K |
|
1907
Henry Schein
HSIC
$9.99B
| $1.59M | ﹤0.01% |
21,800
-8,238
| -27% | -$567K |
|
|
KE
1908
Kimball Electronics
KE
$565M
| $1.59M | ﹤0.01% |
82,782
-22,537
| -21% | -$377K |
|
1909
RPC Inc
RES
$1.36B
| $1.59M | ﹤0.01% |
335,439
-160,443
| -32% | -$773K |
|
1910
Wave Life Sciences
WVE
$1.03B
| $1.58M | ﹤0.01% |
243,167
+1,453
| +0.6% | +$9.6K |
|
1911
WhiteHorse Finance
WHF
$151M
| $1.58M | ﹤0.01% |
181,247
-13,974
| -7% | -$129K |
|
1912
Forestar Group
FOR
$1.48B
| $1.58M | ﹤0.01% |
78,827
+17,188
| +28% | +$340K |
|
1913
Arhaus
ARHS
$1.26B
| $1.57M | ﹤0.01% |
+181,288
| New | +$1.51M |
|
1914
Cricut
CRCT
$1.23B
| $1.57M | ﹤0.01% |
232,054
+43,444
| +23% | +$248K |
|
1915
3D Systems Corp
DDD
$535M
| $1.57M | ﹤0.01% |
1,019,814
-200,457
| -16% | -$363K |
|
|
MTA
1916
Metalla Royalty & Streaming
MTA
$1.06B
| $1.57M | ﹤0.01% |
408,227
+163,760
| +67% | +$522K |
|
1917
Nabors Industries
NBR
$1.3B
| $1.57M | ﹤0.01% |
55,937
-28,668
| -34% | -$853K |
|
1918
CVS Health
CVS
$119B
| $1.57M | ﹤0.01% |
22,692
-2
| -0% | -$131 |
|
1919
Invesco High Yield Equity Dividend Achievers ETF
PEY
$1.17B
| $1.56M | ﹤0.01% |
76,600
-94,800
| -55% | -$1.91M |
|
1920
CALL
Albemarle
ALB
$15.7B
| $1.56M | ﹤0.01% |
+24,900
| New | +$1.47M |
|
1921
Fidelity US Multifactor ETF
FLRG
$298M
| $1.56M | ﹤0.01% |
43,400
+4,900
| +13% | +$165K |
|
1922
Oxford Industries
OXM
$549M
| $1.56M | ﹤0.01% |
+38,745
| New | +$1.95M |
|
|
DTSQ
1923
DT Cloud Star Acquisition Corp
DTSQ
$41.4M
| $1.56M | ﹤0.01% |
150,000
| – | – |
|
1924
Capricor Therapeutics
CAPR
$482M
| $1.55M | ﹤0.01% |
155,837
+30,882
| +25% | +$326K |
|
1925
Butterfly Network
BFLY
$2.41B
| $1.54M | ﹤0.01% |
771,110
+59,707
| +8% | +$137K |
|
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.