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 | |
|---|---|---|---|---|---|---|
601
Darling Ingredients
DAR
$9.84B
| $19.6M | 0.03% |
634,361
+544,821
| +608% | +$18.2M |
|
|
HPE.PRC
602
Hewlett Packard Enterprise 7.625% Series C Preferred Stock
HPE.PRC
$4.03B
| $19.5M | 0.03% |
287,320
+149,069
| +108% | +$9.36M |
|
603
Capital Southwest
CSWC
$1.6B
| $19.5M | 0.03% |
892,353
+131,132
| +17% | +$2.99M |
|
604
Mercury Insurance
MCY
$5.91B
| $19.5M | 0.03% |
229,994
+71,454
| +45% | +$5.27M |
|
605
BILL Holdings
BILL
$4.79B
| $19.5M | 0.03% |
367,379
-968,721
| -73% | -$45M |
|
606
Global Ship Lease
GSL
$1.6B
| $19.2M | 0.03% |
626,787
+16,188
| +3% | +$482K |
|
607
Triple Flag Precious Metals
TFPM
$7.1B
| $19.1M | 0.03% |
651,839
+288,735
| +80% | +$7.46M |
|
608
Fidelity Nasdaq Composite Index ETF
ONEQ
$10.6B
| $19M | 0.03% |
212,800
-314,200
| -60% | -$26.5M |
|
609
Artivion
AORT
$1.33B
| $18.9M | 0.03% |
446,535
+313,446
| +236% | +$11.8M |
|
|
GPGI
610
GPGI Inc
GPGI
$3.73B
| $18.9M | 0.03% |
908,048
-54,292
| -6% | -$939K |
|
611
New Jersey Resources
NJR
$5.44B
| $18.9M | 0.03% |
392,264
+200,024
| +104% | +$9.32M |
|
612
United Parcel Service
UPS
$86.9B
| $18.7M | 0.03% |
223,997
+61,814
| +38% | +$5.6M |
|
613
Duke Energy
DUK
$95B
| $18.6M | 0.03% |
150,178
-75,211
| -33% | -$9.13M |
|
614
PUT
Equinox Gold
EQX
$15.9B
| $18.6M | 0.03% |
1,654,500
| – | – |
|
615
Banc of California
BANC
$2.95B
| $18.5M | 0.03% |
1,120,385
+251,557
| +29% | +$3.94M |
|
616
PUT
Live Nation Entertainment
LYV
$43.1B
| $18.5M | 0.03% |
113,100
| – | – |
|
617
Amprius Technologies
AMPX
$1.45B
| $18.4M | 0.03% |
1,753,577
+341,969
| +24% | +$2.69M |
|
618
Viasat
VSAT
$10.1B
| $18.4M | 0.03% |
628,610
-834,576
| -57% | -$20M |
|
619
Qualys
QLYS
$6.11B
| $18.4M | 0.03% |
139,060
-8,756
| -6% | -$1.19M |
|
620
Vita Coco
COCO
$3.73B
| $18.3M | 0.03% |
430,385
+178,212
| +71% | +$6.61M |
|
621
OneMain Financial
OMF
$7.23B
| $18.2M | 0.03% |
321,704
+255,204
| +384% | +$15.1M |
|
622
PUT
UGI
UGI
$8.13B
| $18.1M | 0.03% |
545,500
| – | – |
|
623
Eos Energy Enterprises
EOSE
$1.25B
| $18M | 0.03% |
1,582,145
+526,833
| +50% | +$3.6M |
|
624
ARK Blockchain & Fintech Innovation ETF
ARKF
$809M
| $17.9M | 0.03% |
+316,000
| New | +$17M |
|
625
Kiniksa Pharmaceuticals
KNSA
$6.22B
| $17.9M | 0.03% |
461,770
+298,030
| +182% | +$9.68M |
|
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.