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 |
State Street Financial Select Sector SPDR ETF
XLF
|
+$474M |
| 2 |
State Street Consumer Staples Select Sector SPDR ETF
XLP
|
+$357M |
| 3 |
Accenture
ACN
|
+$246M |
| 4 |
Advanced Micro Devices
AMD
|
+$235M |
| 5 |
State Street SPDR Dow Jones Industrial Average ETF Trust
DIA
|
+$231M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Invesco QQQ Trust
QQQ
|
+$381M |
| 2 |
State Street Technology Select Sector SPDR ETF
XLK
|
+$375M |
| 3 |
iShares Expanded Tech-Software Sector ETF
IGV
|
+$348M |
| 4 |
Thermo Fisher Scientific
TMO
|
+$292M |
| 5 |
Snowflake
SNOW
|
+$258M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 16.18% |
| 2 | Financials | 15.54% |
| 3 | Industrials | 10.5% |
| 4 | Healthcare | 9.8% |
| 5 | Consumer Discretionary | 8.1% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
3276
Vicor
VICR
$8.76B
| $214K | ﹤0.01% |
4,310
-5,542
| -56% | -$270K |
|
3277
Federal Realty Investment Trust
FRT
$10.2B
| $214K | ﹤0.01% |
2,111
-11,671
| -85% | -$1.13M |
|
3278
Organogenesis Holdings
ORGO
$215M
| $214K | ﹤0.01% |
50,594
-100,029
| -66% | -$465K |
|
|
LBRX
3279
LB Pharmaceuticals
LBRX
$1.56B
| $213K | ﹤0.01% |
+13,500
| New | +$214K |
|
|
EXE
3280
CALL
Expand Energy Corp
EXE
$22.3B
| $212K | ﹤0.01% |
+2,000
| New | +$201K |
|
|
EXE
3281
PUT
Expand Energy Corp
EXE
$22.3B
| $212K | ﹤0.01% |
+2,000
| New | +$201K |
|
|
JBIO
3282
Jade Biosciences
JBIO
$1.36B
| $212K | ﹤0.01% |
+24,610
| New | +$201K |
|
|
SUNS
3283
Sunrise Realty Trust
SUNS
$103M
| $212K | ﹤0.01% |
20,412
-1,128
| -5% | -$12.1K |
|
|
SIFY
3284
Sify Technologies
SIFY
$1.03B
| $211K | ﹤0.01% |
15,420
-1,716
| -10% | -$14.6K |
|
3285
MainStreet Bancshares
MNSB
$179M
| $210K | ﹤0.01% |
10,072
-2,660
| -21% | -$56K |
|
3286
Universal Electronics
UEIC
$56.8M
| $209K | ﹤0.01% |
44,925
+120
| +0.3% | +$660 |
|
3287
Concrete Pumping Holdings
BBCP
$474M
| $208K | ﹤0.01% |
29,505
-18,518
| -39% | -$129K |
|
3288
Harvard Bioscience
HBIO
$34.4M
| $208K | ﹤0.01% |
47,416
+27,637
| +140% | +$131K |
|
3289
Cato Corp
CATO
$55.7M
| $207K | ﹤0.01% |
49,206
-3,317
| -6% | -$11.7K |
|
3290
PUT
Dow Inc
DOW
$22.7B
| $206K | ﹤0.01% |
+9,000
| New | +$224K |
|
|
FDIQ
3291
Invesco Bloomberg Financial Data Providers ETF
FDIQ
$44.1M
| $206K | ﹤0.01% |
3,400
-700
| -17% | -$42.5K |
|
3292
CALL
SharkNinja
SN
$25.8B
| $206K | ﹤0.01% |
+2,000
| New | +$228K |
|
|
REFI
3293
Chicago Atlantic Real Estate Finance
REFI
$276M
| $206K | ﹤0.01% |
16,098
-23,520
| -59% | -$323K |
|
3294
CALL
Becton Dickinson
BDX
$52B
| $206K | ﹤0.01% |
+1,100
| New | +$204K |
|
3295
Coffee Holding Co
JVA
$19.8M
| $205K | ﹤0.01% |
44,919
+15,711
| +54% | +$68.9K |
|
3296
Taylor Devices
TAYD
$187M
| $205K | ﹤0.01% |
+4,184
| New | +$194K |
|
3297
CALL
Deckers Outdoor
DECK
$12.5B
| $203K | ﹤0.01% |
+2,000
| New | +$218K |
|
3298
Resideo Technologies
REZI
$2.93B
| $201K | ﹤0.01% |
4,660
-10,400
| -69% | -$325K |
|
3299
PUT
Otis Worldwide
OTIS
$27.5B
| $201K | ﹤0.01% |
+2,200
| New | +$200K |
|
|
RERE
3300
ATRenew
RERE
$906M
| $201K | ﹤0.01% |
+43,603
| New | +$175K |
|
Similar funds
John Overdeck's Q3 2025 Portfolio in Review
As of Q3 2025, John Overdeck held 4,027 positions worth $67.2B, up 19% from $56.5B the previous quarter. Its ten largest holdings account for 6.2% of the portfolio.
John Overdeck deployed $4.46B of net new capital in Q3 2025, opening 877 new positions and adding to 1,461 existing holdings. Its largest new stake was Berkshire Hathaway Class B: 379,096 shares worth $191M.
By sector, the portfolio is most concentrated in Technology at 16% of assets, down from 17% a quarter earlier, followed by Financials and Industrials.
On the sell side, the largest reduction was Invesco QQQ Trust, an estimated $381M trimmed.
- John Overdeck's largest Q3 2025 buy was Berkshire Hathaway Class B: 379,096 shares worth $191M.
- John Overdeck added most to State Street Financial Select Sector SPDR ETF in Q3 2025, an estimated $474M increase.
- John Overdeck's biggest Q3 2025 reduction was Invesco QQQ Trust, cutting an estimated $381M.
- John Overdeck fully exited NextEra Energy, Inc. 6.926% Corporate Units in Q3 2025, selling an estimated $115M.
- John Overdeck's ten largest holdings make up 6.2% of its $67.2B portfolio in Q3 2025.
- John Overdeck opened 877 new positions and closed 399 in Q3 2025.
- John Overdeck's portfolio value rose 19% quarter-over-quarter to $67.2B.
Based on Two Sigma Investments's 13F filing for Q3 2025, filed 14 Nov 2025.