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 | |
|---|---|---|---|---|---|---|
2176
CALL
Lam Research
LRCX
$393B
| $4.46M | ﹤0.01% |
10,300
+6,200
| +151% | +$1.88M |
|
2177
Tetra Tech
TTEK
$9.47B
| $4.46M | ﹤0.01% |
154,365
-29,400
| -16% | -$863K |
|
2178
Ooma
OOMA
$605M
| $4.46M | ﹤0.01% |
231,848
+103,009
| +80% | +$1.77M |
|
2179
RLX Technology
RLX
$2.21B
| $4.45M | ﹤0.01% |
2,343,695
+1,715,872
| +273% | +$3.56M |
|
2180
CBIZ
CBZ
$2.97B
| $4.44M | ﹤0.01% |
138,434
-192,251
| -58% | -$5.98M |
|
2181
Golub Capital BDC
GBDC
$3.43B
| $4.44M | ﹤0.01% |
344,707
+202,247
| +142% | +$2.64M |
|
|
OGG
2182
Osisko Gold Group
OGG
$939M
| $4.43M | ﹤0.01% |
1,802,654
+87,426
| +5% | +$259K |
|
2183
State Street SPDR S&P Telecom ETF
XTL
$521M
| $4.41M | ﹤0.01% |
+19,400
| New | +$4.32M |
|
|
KREF
2184
KKR Real Estate Finance Trust
KREF
$487M
| $4.4M | ﹤0.01% |
643,206
-298,995
| -32% | -$1.98M |
|
2185
CALL
Trade Desk
TTD
$6.19B
| $4.4M | ﹤0.01% |
243,300
+225,300
| +1,252% | +$4.78M |
|
|
WCC
2186
WESCO International
WCC
$17B
| $4.4M | ﹤0.01% |
+12,729
| New | +$4.32M |
|
2187
PUT
Costco
COST
$420B
| $4.4M | ﹤0.01% |
4,700
-3,300
| -41% | -$3.29M |
|
2188
Cabaletta Bio
CABA
$531M
| $4.39M | ﹤0.01% |
1,410,931
-1,086,986
| -44% | -$3.57M |
|
2189
Antero Midstream
AM
$10.5B
| $4.39M | ﹤0.01% |
192,842
+80,090
| +71% | +$1.74M |
|
2190
First Trust Financials AlphaDEX Fund
FXO
$1.12B
| $4.38M | ﹤0.01% |
70,200
-133,900
| -66% | -$7.98M |
|
2191
CALL
Applovin
APP
$102B
| $4.38M | ﹤0.01% |
8,500
-2,300
| -21% | -$1.11M |
|
2192
Navient
NAVI
$886M
| $4.38M | ﹤0.01% |
514,544
-489,366
| -49% | -$4.11M |
|
|
SBXE
2193
SilverBox Corp V
SBXE
| $4.38M | ﹤0.01% |
434,999
| – | – |
|
2194
Mineralys Therapeutics
MLYS
$2.27B
| $4.37M | ﹤0.01% |
162,082
-149,406
| -48% | -$4.1M |
|
2195
iShares US Insurance ETF
IAK
$569M
| $4.37M | ﹤0.01% |
31,100
-28,000
| -47% | -$3.72M |
|
2196
PUT
Walt Disney
DIS
$186B
| $4.36M | ﹤0.01% |
45,300
+9,600
| +27% | +$979K |
|
2197
Global Industrial
GIC
$1.5B
| $4.35M | ﹤0.01% |
129,947
-72,772
| -36% | -$2.31M |
|
2198
PUT
Reddit
RDDT
$29.5B
| $4.34M | ﹤0.01% |
25,000
-54,000
| -68% | -$8.65M |
|
2199
AtaiBeckley Inc
ATAI
$2.74B
| $4.33M | ﹤0.01% |
822,471
-1,153,081
| -58% | -$4.85M |
|
2200
LendingTree
TREE
$433M
| $4.33M | ﹤0.01% |
97,784
+26,341
| +37% | +$1.06M |
|
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.