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 | |
|---|---|---|---|---|---|---|
|
JACS
1401
Jackson Acquisition Co II
JACS
$318M
| $4.93M | 0.01% |
474,821
| – | – |
|
1402
ANI Pharmaceuticals
ANIP
$1.7B
| $4.93M | 0.01% |
+53,783
| New | +$4.39M |
|
1403
Koppers
KOP
$867M
| $4.92M | 0.01% |
175,772
+39,194
| +29% | +$1.21M |
|
1404
Lantheus
LNTH
$6.58B
| $4.92M | 0.01% |
+95,921
| New | +$5.99M |
|
1405
Alcon
ALC
$35.6B
| $4.92M | 0.01% |
65,981
-73,982
| -53% | -$6.17M |
|
1406
IonQ
IONQ
$16.6B
| $4.91M | 0.01% |
79,904
| – | – |
|
|
NPKI
1407
NPK International
NPKI
$1.12B
| $4.91M | 0.01% |
433,700
+323,549
| +294% | +$3.15M |
|
1408
1st Source
SRCE
$2.07B
| $4.9M | 0.01% |
79,566
+16,287
| +26% | +$1.02M |
|
1409
Sprout Social
SPT
$627M
| $4.89M | 0.01% |
378,276
+331,993
| +717% | +$5.42M |
|
1410
Textron
TXT
$14.1B
| $4.87M | 0.01% |
57,610
-415
| -0.7% | -$33.8K |
|
1411
Apogee Therapeutics
APGE
$10.2B
| $4.86M | 0.01% |
122,375
+6,681
| +6% | +$255K |
|
1412
LCI Industries
LCII
$2.54B
| $4.86M | 0.01% |
+52,125
| New | +$5.2M |
|
1413
Rubrik
RBRK
$20.2B
| $4.85M | 0.01% |
59,000
-1,075,624
| -95% | -$92.5M |
|
1414
Bitdeer Technologies
BTDR
$2.97B
| $4.84M | 0.01% |
283,290
+51,228
| +22% | +$719K |
|
1415
Applied Materials
AMAT
$384B
| $4.83M | 0.01% |
23,600
| – | – |
|
1416
Global X Cloud Computing ETF
CLOU
$368M
| $4.83M | 0.01% |
207,700
-58,500
| -22% | -$1.34M |
|
1417
Pembina Pipeline
PBA
$28.3B
| $4.82M | 0.01% |
119,079
+49,683
| +72% | +$1.87M |
|
1418
News Corp Class A
NWSA
$16.6B
| $4.82M | 0.01% |
156,832
-139,524
| -47% | -$4.14M |
|
1419
STAG Industrial
STAG
$7.14B
| $4.81M | 0.01% |
136,414
+126,259
| +1,243% | +$4.5M |
|
1420
Penumbra
PEN
$12.8B
| $4.78M | 0.01% |
18,880
-15,520
| -45% | -$3.91M |
|
1421
Zegna
ZGN
$3.72B
| $4.77M | 0.01% |
504,973
+163,625
| +48% | +$1.42M |
|
1422
Financial Institutions
FISI
$804M
| $4.77M | 0.01% |
175,427
+87,653
| +100% | +$2.34M |
|
|
K
1423
DELISTED
Kellanova
K
| $4.76M | 0.01% |
57,996
-440,558
| -88% | -$35M |
|
|
EA
1424
DELISTED
Electronic Arts
EA
| $4.75M | 0.01% |
23,546
+1,922
| +9% | +$318K |
|
|
FIGX
1425
FIGX Capital Acquisition Corp
FIGX
| $4.74M | 0.01% |
+474,874
| New | +$4.74M |
|
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.