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 |
Intuit
INTU
|
+$753M |
| 2 |
Boston Scientific
BSX
|
+$540M |
| 3 |
Dow Inc
DOW
|
+$485M |
| 4 |
Wells Fargo
WFC
|
+$457M |
| 5 |
Goldman Sachs
GS
|
+$378M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Micron Technology
MU
|
+$1.32B |
| 2 |
NVIDIA
NVDA
|
+$1.02B |
| 3 |
Alphabet (Google) Class A
GOOGL
|
+$787M |
| 4 |
SNDK
Sandisk
SNDK
|
+$744M |
| 5 |
Dell
DELL
|
+$688M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 19.71% |
| 2 | Financials | 15.22% |
| 3 | Healthcare | 11.94% |
| 4 | Industrials | 11.55% |
| 5 | Consumer Discretionary | 9.6% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
1701
Mayville Engineering Co
MEC
$554M
| $7.45M | 0.01% |
198,912
+164,204
| +473% | +$4.39M |
|
1702
PUT
AbbVie
ABBV
$468B
| $7.45M | 0.01% |
29,600
+6,600
| +29% | +$1.42M |
|
1703
Colony Bankcorp
CBAN
$456M
| $7.45M | 0.01% |
370,597
+129,844
| +54% | +$2.62M |
|
1704
Intapp
INTA
$3.16B
| $7.43M | 0.01% |
294,637
+187,243
| +174% | +$4.27M |
|
1705
Healthcare Realty
HR
$6.65B
| $7.42M | 0.01% |
367,792
+346,292
| +1,611% | +$6.73M |
|
1706
JB Hunt Transport Services
JBHT
$25.9B
| $7.41M | 0.01% |
25,600
-3,300
| -11% | -$847K |
|
|
SEPN
1707
Septerna Inc
SEPN
$1.87B
| $7.4M | 0.01% |
220,885
+145,518
| +193% | +$4.13M |
|
1708
Prosperity Bancshares
PB
$8.75B
| $7.39M | 0.01% |
101,231
-192,031
| -65% | -$13.4M |
|
1709
CALL
Johnson & Johnson
JNJ
$651B
| $7.39M | 0.01% |
29,100
-14,600
| -33% | -$3.4M |
|
1710
Covenant Logistics
CVLG
$893M
| $7.39M | 0.01% |
167,280
+57,253
| +52% | +$2.09M |
|
1711
Tenet Healthcare
THC
$22.6B
| $7.39M | 0.01% |
39,497
-1,009
| -2% | -$186K |
|
|
VNME
1712
Vendome Acquisition Corp I
VNME
$257M
| $7.39M | 0.01% |
725,000
| – | – |
|
1713
Acco Brands
ACCO
$391M
| $7.38M | 0.01% |
1,774,088
+339,152
| +24% | +$1.25M |
|
1714
ASE Group
ASX
$95.1B
| $7.38M | 0.01% |
163,567
+43,867
| +37% | +$1.47M |
|
1715
Maximus
MMS
$3.05B
| $7.37M | 0.01% |
137,026
+111,402
| +435% | +$6.94M |
|
1716
Community Health Systems
CYH
$424M
| $7.37M | 0.01% |
2,205,336
-795,070
| -26% | -$2.34M |
|
1717
Philip Morris
PM
$293B
| $7.35M | 0.01% |
40,645
| – | – |
|
|
GSRF
1718
GSR IV Acquisition Corp
GSRF
| $7.35M | 0.01% |
725,000
| – | – |
|
1719
CALL
Western Digital
WDC
$166B
| $7.35M | 0.01% |
11,500
-2,800
| -20% | -$1.36M |
|
1720
NRG Energy
NRG
$23.8B
| $7.34M | 0.01% |
50,278
+44,675
| +797% | +$6.43M |
|
1721
PAR Technology
PAR
$808M
| $7.34M | 0.01% |
+421,491
| New | +$6.08M |
|
1722
Arcturus Therapeutics
ARCT
$382M
| $7.33M | 0.01% |
1,091,137
+9,353
| +0.9% | +$73.7K |
|
|
GAU
1723
Galiano Gold
GAU
$612M
| $7.33M | 0.01% |
3,919,488
-712,524
| -15% | -$1.65M |
|
1724
CALL
Eaton
ETN
$163B
| $7.33M | 0.01% |
17,200
+1,000
| +6% | +$403K |
|
1725
Investar Holding Corp
ISTR
$418M
| $7.33M | 0.01% |
244,626
+219,890
| +889% | +$6.28M |
|
Similar funds
John Overdeck's Q2 2026 Portfolio in Review
As of Q2 2026, John Overdeck held 5,589 positions worth $138B, up 11% from $124B the previous quarter. Its ten largest holdings account for 8.3% of the portfolio.
John Overdeck withdrew a net $4.38B in Q2 2026, closing 572 positions and reducing 1,756 holdings. Its most notable exit was State Street Technology Select Sector SPDR ETF, an estimated $172M position sold in full.
By sector, the portfolio is most concentrated in Technology at 20% of assets, up from 19% a quarter earlier, followed by Financials and Healthcare.
Against the trend, John Overdeck opened a new position in Intuit worth $564M.
- John Overdeck's largest Q2 2026 buy was Intuit: 2,161,507 shares worth $564M.
- John Overdeck added most to Boston Scientific in Q2 2026, an estimated $540M increase.
- John Overdeck's biggest Q2 2026 reduction was Micron Technology, cutting an estimated $1.32B.
- John Overdeck fully exited State Street Technology Select Sector SPDR ETF in Q2 2026, selling an estimated $172M.
- John Overdeck's ten largest holdings make up 8.3% of its $138B portfolio in Q2 2026.
- John Overdeck opened 1,050 new positions and closed 572 in Q2 2026.
- John Overdeck's portfolio value rose 11% quarter-over-quarter to $138B.
Based on Two Sigma Investments's 13F filing for Q2 2026, filed 14 Aug 2026.