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 | |
|---|---|---|---|---|---|---|
|
NVEE
2301
DELISTED
NV5 Global
NVEE
| $773K | ﹤0.01% |
33,458
-2,480
| -7% | -$49.6K |
|
2302
Tarsus Pharmaceuticals
TARS
$3.2B
| $771K | ﹤0.01% |
19,025
-10,257
| -35% | -$462K |
|
2303
AudioCodes
AUDC
$232M
| $768K | ﹤0.01% |
78,242
+10,154
| +15% | +$93K |
|
2304
American Vanguard Corp
AVD
$64M
| $767K | ﹤0.01% |
195,665
-73,622
| -27% | -$307K |
|
2305
Perrigo
PRGO
$1.98B
| $766K | ﹤0.01% |
28,678
-65,127
| -69% | -$1.71M |
|
2306
WisdomTree Japan Hedged Equity Fund
DXJ
$7.22B
| $766K | ﹤0.01% |
6,700
+100
| +2% | +$10.9K |
|
2307
First Trust Dorsey Wright Momentum & Low Volatility ETF
DVOL
$72.8M
| $765K | ﹤0.01% |
+21,800
| New | +$757K |
|
2308
Vuzix
VUZI
$235M
| $765K | ﹤0.01% |
261,909
+44,842
| +21% | +$106K |
|
|
TERN
2309
DELISTED
Terns Pharmaceuticals
TERN
| $764K | ﹤0.01% |
204,957
+77,485
| +61% | +$242K |
|
2310
Quantum Computing Inc
QUBT
$1.87B
| $761K | ﹤0.01% |
39,704
| – | – |
|
2311
Kodak
KODK
$948M
| $760K | ﹤0.01% |
134,559
+68,876
| +105% | +$414K |
|
|
CRON
2312
Cronos Group
CRON
$1.26B
| $759K | ﹤0.01% |
397,613
+20,921
| +6% | +$39.6K |
|
2313
Palmer Square Capital BDC
PSBD
$318M
| $756K | ﹤0.01% |
54,152
+9,178
| +20% | +$124K |
|
|
NEXN
2314
Nexxen International
NEXN
$570M
| $754K | ﹤0.01% |
72,460
-16,851
| -19% | -$171K |
|
2315
First Bank
FRBA
$449M
| $754K | ﹤0.01% |
48,740
-5,974
| -11% | -$86.5K |
|
|
MITT
2316
TPG Mortgage Investment Trust
MITT
$214M
| $754K | ﹤0.01% |
99,855
-119,744
| -55% | -$829K |
|
2317
BellRing Brands
BRBR
$1.26B
| $753K | ﹤0.01% |
13,000
-26,400
| -67% | -$1.76M |
|
2318
NovaGold Resources
NG
$4.1B
| $752K | ﹤0.01% |
183,872
+15,058
| +9% | +$56.4K |
|
2319
Forum Energy Technologies
FET
$855M
| $750K | ﹤0.01% |
38,511
-14,735
| -28% | -$238K |
|
|
DAY
2320
DELISTED
Dayforce
DAY
| $748K | ﹤0.01% |
13,500
-2,800
| -17% | -$160K |
|
2321
NatWest
NWG
$74.4B
| $746K | ﹤0.01% |
52,709
| – | – |
|
2322
BlueLinx
BXC
$653M
| $744K | ﹤0.01% |
10,002
-6,125
| -38% | -$428K |
|
2323
Opus Small Cap Value ETF
OSCV
$693M
| $744K | ﹤0.01% |
20,600
-10,000
| -33% | -$348K |
|
2324
SIGA Technologies
SIGA
$211M
| $742K | ﹤0.01% |
113,735
+85,993
| +310% | +$516K |
|
2325
Boston Omaha
BOC
$422M
| $739K | ﹤0.01% |
52,637
+2,222
| +4% | +$32.4K |
|
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.