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 | |
|---|---|---|---|---|---|---|
251
CRISPR Therapeutics
CRSP
$5.75B
| $67.7M | 0.1% |
1,044,689
-501,277
| -32% | -$28.8M |
|
252
iShares S&P 500 Value ETF
IVE
$50.2B
| $67.6M | 0.1% |
327,200
+286,300
| +700% | +$57.5M |
|
253
HDFC Bank
HDB
$121B
| $67.5M | 0.1% |
1,975,583
-47,847
| -2% | -$1.76M |
|
254
Unum
UNM
$13.9B
| $67.2M | 0.1% |
864,485
+484,107
| +127% | +$36.3M |
|
255
KeyCorp
KEY
$23.3B
| $66.7M | 0.1% |
+3,567,827
| New | +$66M |
|
256
CALL
State Street SPDR S&P 500 ETF Trust
SPY
$809B
| $66.5M | 0.1% |
+99,800
| New | +$64M |
|
|
257
PUT
State Street SPDR S&P 500 ETF Trust
SPY
$809B
| $66.5M | 0.1% |
+99,800
| New | +$64M |
|
258
Morningstar
MORN
$8.1B
| $66.4M | 0.1% |
286,175
+125,507
| +78% | +$33.5M |
|
259
Monster Beverage
MNST
$93.6B
| $66.2M | 0.1% |
1,966,740
-3,271,236
| -62% | -$102M |
|
260
S&P Global
SPGI
$127B
| $66M | 0.1% |
135,515
+96,243
| +245% | +$51.5M |
|
261
Coeur Mining
CDE
$21.6B
| $65.8M | 0.1% |
3,509,823
-2,894,315
| -45% | -$35.4M |
|
262
Invesco S&P 500 Momentum ETF
SPMO
$21.8B
| $65.8M | 0.1% |
543,500
+106,100
| +24% | +$12.4M |
|
263
Palo Alto Networks
PANW
$292B
| $65.8M | 0.1% |
323,061
-211,191
| -40% | -$40.4M |
|
264
STMicroelectronics
STM
$45.1B
| $65.6M | 0.1% |
2,322,540
+1,334,192
| +135% | +$37.3M |
|
265
Encompass Health
EHC
$11.9B
| $64.2M | 0.1% |
505,641
+1,629
| +0.3% | +$194K |
|
266
MarketAxess Holdings
MKTX
$5.71B
| $63.5M | 0.09% |
364,384
+84,295
| +30% | +$16.5M |
|
267
Ecolab
ECL
$78.9B
| $63.4M | 0.09% |
231,461
+67,576
| +41% | +$18.4M |
|
268
Commault Systems
CVLT
$5.55B
| $63.3M | 0.09% |
335,047
-20,487
| -6% | -$3.69M |
|
269
CF Industries
CF
$19.6B
| $62.9M | 0.09% |
700,998
+35,868
| +5% | +$3.2M |
|
270
American International
AIG
$39.8B
| $62.1M | 0.09% |
790,343
+744,261
| +1,615% | +$59.5M |
|
271
Five Below
FIVE
$13.8B
| $61.9M | 0.09% |
400,254
-543,743
| -58% | -$76.9M |
|
272
Mobileye
MBLY
$7.68B
| $61.9M | 0.09% |
4,383,735
+2,493,181
| +132% | +$37.1M |
|
273
Martin Marietta Materials
MLM
$32.1B
| $61.9M | 0.09% |
98,156
-119,186
| -55% | -$71M |
|
274
US Bancorp
USB
$96.7B
| $60.1M | 0.09% |
1,243,628
-1,199,182
| -49% | -$56.7M |
|
275
TKO Group
TKO
$14.1B
| $59.6M | 0.09% |
295,293
+178,600
| +153% | +$32.6M |
|
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.