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 | |
|---|---|---|---|---|---|---|
1426
Frequency Electronics
FEIM
$640M
| $4.74M | 0.01% |
139,687
+89,698
| +179% | +$2.49M |
|
1427
Snap-on
SNA
$20.4B
| $4.74M | 0.01% |
13,665
-32,886
| -71% | -$10.8M |
|
|
XYZ
1428
Block Inc
XYZ
$48.9B
| $4.73M | 0.01% |
65,400
| – | – |
|
1429
Freeport-McMoran
FCX
$112B
| $4.72M | 0.01% |
+120,473
| New | +$5.23M |
|
|
KC
1430
Kingsoft Cloud Holdings
KC
$3.12B
| $4.72M | 0.01% |
316,472
| – | – |
|
1431
AES
AES
$10.5B
| $4.72M | 0.01% |
358,700
-1,241,677
| -78% | -$16.1M |
|
1432
International Bancshares
IBOC
$4.45B
| $4.72M | 0.01% |
68,658
+52,858
| +335% | +$3.69M |
|
1433
Dime Commercial Bancshares
DCOM
$1.78B
| $4.72M | 0.01% |
158,236
+24,012
| +18% | +$704K |
|
|
DOCU
1434
DocuSign
DOCU
$11.9B
| $4.72M | 0.01% |
+65,411
| New | +$5.04M |
|
1435
Spotify
SPOT
$111B
| $4.71M | 0.01% |
6,754
-43,646
| -87% | -$30.5M |
|
1436
Allegro MicroSystems
ALGM
$6.64B
| $4.71M | 0.01% |
161,348
-185,458
| -53% | -$6M |
|
|
LEGT
1437
DELISTED
Legato Merger Corp III
LEGT
| $4.7M | 0.01% |
437,500
| – | – |
|
1438
AGCO
AGCO
$7.71B
| $4.69M | 0.01% |
43,800
-31,258
| -42% | -$3.45M |
|
1439
Helen of Troy
HELE
$666M
| $4.68M | 0.01% |
+185,785
| New | +$4.5M |
|
|
ORLA
1440
DELISTED
Orla Mining
ORLA
| $4.68M | 0.01% |
433,491
-228,158
| -34% | -$2.44M |
|
1441
Jack in the Box
JACK
$342M
| $4.68M | 0.01% |
236,606
+154,002
| +186% | +$3.06M |
|
1442
PG&E
PCG
$39.9B
| $4.67M | 0.01% |
309,977
-1,705,225
| -85% | -$24.9M |
|
1443
Verizon
VZ
$208B
| $4.67M | 0.01% |
106,200
-1,122,563
| -91% | -$48.6M |
|
1444
Sasol
SSL
$7.87B
| $4.66M | 0.01% |
749,117
-255,472
| -25% | -$1.49M |
|
1445
KBR
KBR
$4.75B
| $4.64M | 0.01% |
98,214
-102,418
| -51% | -$4.97M |
|
|
GRDN
1446
Guardian Pharmacy Services
GRDN
$2.39B
| $4.64M | 0.01% |
176,737
+98,013
| +125% | +$2.34M |
|
1447
Fluor
FLR
$6.86B
| $4.63M | 0.01% |
+110,032
| New | +$5.06M |
|
1448
TechnipFMC
FTI
$29.7B
| $4.63M | 0.01% |
117,288
-474,945
| -80% | -$17.4M |
|
|
1449
Thermo Fisher Scientific
TMO
$232B
| $4.62M | 0.01% |
9,528
-627,589
| -99% | -$292M |
|
1450
Okta
OKTA
$22.8B
| $4.62M | 0.01% |
50,392
+10,813
| +27% | +$1.01M |
|
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.