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 | |
|---|---|---|---|---|---|---|
1351
Lincoln Educational Services
LINC
$788M
| $3.75M | 0.01% |
+162,774
| New | +$3.27M |
|
1352
CNA Financial
CNA
$13.4B
| $3.74M | 0.01% |
80,457
-26,188
| -25% | -$1.24M |
|
|
SBR
1353
Sabine Royalty Trust
SBR
$1.06B
| $3.74M | 0.01% |
56,130
+13,502
| +32% | +$887K |
|
1354
State Street SPDR US Large Cap Low Volatility Index ETF
LGLV
$1.24B
| $3.74M | 0.01% |
+21,410
| New | +$3.67M |
|
1355
Progyny
PGNY
$1.95B
| $3.73M | 0.01% |
169,692
-152,816
| -47% | -$3.35M |
|
1356
Tronox
TROX
$861M
| $3.72M | 0.01% |
734,083
+315,921
| +76% | +$1.72M |
|
|
TAVI
1357
Tavia Acquisition Corp
TAVI
$171M
| $3.72M | 0.01% |
362,500
| – | – |
|
1358
GoodRx Holdings
GDRX
$1.17B
| $3.71M | 0.01% |
745,844
+237,630
| +47% | +$1.03M |
|
1359
PrimeEnergy Resources
PNRG
$328M
| $3.7M | 0.01% |
+25,302
| New | +$4.39M |
|
|
DEA
1360
Easterly Government Properties
DEA
$1.18B
| $3.7M | 0.01% |
166,746
-485,260
| -74% | -$10.6M |
|
1361
Heartland Express
HTLD
$967M
| $3.67M | 0.01% |
425,287
-115,153
| -21% | -$987K |
|
1362
Invesco NASDAQ Internet ETF
PNQI
$544M
| $3.67M | 0.01% |
+70,300
| New | +$3.3M |
|
1363
Yum China
YUMC
$16.7B
| $3.66M | 0.01% |
81,848
-89,168
| -52% | -$3.99M |
|
1364
Constellation Brands
STZ
$23.5B
| $3.64M | 0.01% |
22,403
-156,657
| -87% | -$28.1M |
|
1365
Tenet Healthcare
THC
$22.4B
| $3.63M | 0.01% |
20,617
-5,233
| -20% | -$788K |
|
1366
Masco
MAS
$14.4B
| $3.63M | 0.01% |
56,364
+34,589
| +159% | +$2.18M |
|
1367
Dime Commercial Bancshares
DCOM
$1.78B
| $3.62M | 0.01% |
134,224
+27,259
| +25% | +$713K |
|
1368
Keurig Dr Pepper
KDP
$44.2B
| $3.61M | 0.01% |
109,139
-3,965,283
| -97% | -$134M |
|
1369
Devon Energy
DVN
$53.1B
| $3.61M | 0.01% |
+113,403
| New | +$3.61M |
|
1370
Oportun Financial
OPRT
$350M
| $3.6M | 0.01% |
502,592
-55,313
| -10% | -$332K |
|
1371
First Trust Large Cap Growth AlphaDEX Fund
FTC
$1.36B
| $3.59M | 0.01% |
+23,800
| New | +$3.28M |
|
|
ARIS
1372
DELISTED
Aris Water Solutions
ARIS
| $3.59M | 0.01% |
151,850
+121,237
| +396% | +$2.99M |
|
1373
Lumentum
LITE
$74.5B
| $3.59M | 0.01% |
37,715
-148,013
| -80% | -$10.5M |
|
1374
Amylyx Pharmaceuticals
AMLX
$4.25B
| $3.58M | 0.01% |
558,846
-203,207
| -27% | -$988K |
|
1375
Allegiant Air
ALGT
$2.23B
| $3.58M | 0.01% |
65,130
+41,552
| +176% | +$2.14M |
|
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.