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 | |
|---|---|---|---|---|---|---|
1876
T. Rowe Price Dividend Growth ETF
TDVG
$1.46B
| $1.67M | ﹤0.01% |
+39,400
| New | +$1.59M |
|
|
EB
1877
DELISTED
Eventbrite
EB
| $1.67M | ﹤0.01% |
634,876
-184,849
| -23% | -$426K |
|
1878
Home Bancorp
HBCP
$543M
| $1.67M | ﹤0.01% |
32,176
+15,477
| +93% | +$753K |
|
1879
Weave Communications
WEAV
$583M
| $1.67M | ﹤0.01% |
200,144
-112,242
| -36% | -$1.09M |
|
|
DMC
1880
Del Monte Corp
DMC
$1.5B
| $1.66M | ﹤0.01% |
51,307
-92,045
| -64% | -$3.03M |
|
1881
United Rentals
URI
$65.6B
| $1.66M | ﹤0.01% |
+2,206
| New | +$1.48M |
|
1882
TCW Transform 500 ETF
VOTE
$1.13B
| $1.65M | ﹤0.01% |
+22,700
| New | +$1.52M |
|
1883
Oaktree Specialty Lending
OCSL
$1.16B
| $1.65M | ﹤0.01% |
120,839
-56,095
| -32% | -$791K |
|
1884
Hyster-Yale Materials Handling
HY
$624M
| $1.65M | ﹤0.01% |
41,415
+11,659
| +39% | +$465K |
|
1885
iShares US Tech Independence Focused ETF
IETC
$693M
| $1.65M | ﹤0.01% |
17,500
-60,100
| -77% | -$4.98M |
|
1886
Celldex Therapeutics
CLDX
$3.24B
| $1.64M | ﹤0.01% |
80,733
+52,077
| +182% | +$1.01M |
|
1887
RBC Bearings
RBC
$15.7B
| $1.64M | ﹤0.01% |
4,266
-19,892
| -82% | -$7.02M |
|
|
ASG
1888
Liberty All-Star Growth Fund
ASG
$333M
| $1.64M | ﹤0.01% |
+299,956
| New | +$1.52M |
|
|
NOA
1889
North American Construction
NOA
$359M
| $1.63M | ﹤0.01% |
102,202
+24,776
| +32% | +$403K |
|
1890
First Community Corp
FCCO
$320M
| $1.63M | ﹤0.01% |
66,829
-46,771
| -41% | -$1.08M |
|
1891
Qiagen
QGEN
$9.01B
| $1.63M | ﹤0.01% |
33,893
-477,260
| -93% | -$20.8M |
|
1892
Equity Bancshares
EQBK
$1.02B
| $1.63M | ﹤0.01% |
39,839
-22,790
| -36% | -$884K |
|
1893
CapForce IBD 50 ETF
FFTY
$79.3M
| $1.62M | ﹤0.01% |
+50,000
| New | +$1.43M |
|
1894
EastGroup Properties
EGP
$10.9B
| $1.62M | ﹤0.01% |
9,683
-16,360
| -63% | -$2.72M |
|
1895
Ituran Location and Control
ITRN
$1.01B
| $1.62M | ﹤0.01% |
41,724
+5,400
| +15% | +$194K |
|
1896
Capital Bancorp
CBNK
$592M
| $1.62M | ﹤0.01% |
48,103
+10,423
| +28% | +$320K |
|
1897
Quanterix
QTRX
$132M
| $1.61M | ﹤0.01% |
242,689
+106,674
| +78% | +$594K |
|
1898
Invesco NASDAQ 100 ETF
QQQM
$103B
| $1.61M | ﹤0.01% |
7,100
-257,700
| -97% | -$52.8M |
|
|
OS
1899
DELISTED
OneStream Inc
OS
| $1.61M | ﹤0.01% |
56,968
-14,911
| -21% | -$371K |
|
1900
Nexstar Media Group
NXST
$5.83B
| $1.61M | ﹤0.01% |
9,304
-27,453
| -75% | -$4.5M |
|
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.