How We Invest

13F FILER • SIEGEL & OVERDECK

Two Sigma Investments

Siegel & Overdeck — TWO SIGMA INVESTMENTS, LP

No writing by this manager has been read and indexed yet, so this page carries the filings only. Holdings come straight from the Form 13F-HR on EDGAR.

5017

Positions

$138.1B

Reported Value

8.3%

In Top 10

—

Claims Indexed

Largest reported positions

TWO SIGMA INVESTMENTS, LP • CIK 0001179392 • 2026-06-30 • FILED 2026-08-14

WHAT CHANGED THIS QUARTER

In its Q2 2026 13F, filed Aug 14, 2026, Two Sigma Investments reported 5,017 positions worth $128.6B in US-listed stock. With 5,017 positions and only 8.3% in the ten largest, this is a diffuse book, where single lines are inventory rather than convictions.

It opened 1,084 new positions, the largest stock position being Intuit ($564.2M), and exited 613, the largest stock exits being Honeywell Intl Inc ($392.7M last quarter), Select Sector Spdr Tr ($172.1M last quarter) and Select Sector Spdr Tr ($111.5M last quarter).

Among positions it already held, the biggest increases by share count were Wells Fargo & Co (+359%), Chipotle Mexican Grill Inc (+125%) and Goldman Sachs Group Inc (+106%), and the biggest cuts were Micron Technology Inc (−77%), Sandisk Corp (−68%) and Alphabet Inc (−49%).

Largest reported positions, quarter ended 2026-06-30
IssuerValueWeightShares QoQ
WESTERN DIGITAL CORP (PRN)$1.5B1.1%-0%
AMAZON COM INC$1.4B1.0%-10%
NVIDIA CORPORATION$1.3B0.9%-44%
APPLE INC$1.2B0.9%-30%
TESLA INC$1.2B0.9%-2%
BERKSHIRE HATHAWAY INC DEL$1.1B0.8%+40%
JPMORGAN CHASE & CO$968.1M0.7%-11%
MASTERCARD INCORPORATED$945.6M0.7%+10%
COSTCO WHOLESALE CORPORATION$941.3M0.7%+15%
ASML HLDG NV$918.1M0.7%+22%
ADVANCED MICRO DEVICES INC$880.3M0.6%+11%
CITIGROUP INC$831.1M0.6%+38%
BOSTON SCIENTIFIC CORP$826.2M0.6%+106%
ALPHABET INC$802.9M0.6%-49%
LOCKHEED MARTIN CORP$799.8M0.6%+16%
INTUITIVE SURGICAL INC$787.1M0.6%+41%
SCHWAB CHARLES CORP$777.4M0.6%+57%
KIMBERLY-CLARK CORP$774.4M0.6%+36%
GOLDMAN SACHS GROUP INC$762.1M0.6%+106%
TJX COS INC NEW$756.1M0.6%-5%

20 of 5,017 positions. 3.8% of reported value is options, where the figure is the notional value of the underlying rather than money spent. $4.2B of the reported value is Section 13(f) debt — convertible notes and the like — which the form covers alongside equities. A 13F covers long US-listed positions at a quarter end only — no shorts, leverage, cash, ordinary bonds or private holdings — and is 45 days old on publication.

NEW POSITIONS

  • Intuit$564.2M · 0.4%

EXITS

  • Honeywell Intl Inc$392.7M last quarter
  • Select Sector Spdr Tr$172.1M last quarter
  • Select Sector Spdr Tr$111.5M last quarter
  • Ishares Tr$93.1M last quarter
  • Charter Communications Inc$65.2M last quarter

QUESTIONS PEOPLE ASK

What are Two Sigma Investments' largest holdings?

OPEN
As of Jun 30, 2026, the three largest stock positions are Amazon Com Inc (1.0%), Nvidia Corporation (0.9%) and Apple Inc (0.9%). With 5,017 positions and only 8.3% in the ten largest, this is a diffuse book, where single lines are inventory rather than convictions.

How big is Two Sigma Investments' 13F portfolio?

OPEN
The Q2 2026 13F, filed Aug 14, 2026, reports 5,017 positions worth $138.1B. The ten largest make up 8.3% of it. 3.8% of that value is options, reported at the notional value of the underlying rather than money spent.

What did Two Sigma Investments buy and sell in Q2 2026?

OPEN
It opened 1,084 new positions, the largest stock position being Intuit ($564.2M), and exited 613, the largest stock exits being Honeywell Intl Inc ($392.7M last quarter), Select Sector Spdr Tr ($172.1M last quarter) and Select Sector Spdr Tr ($111.5M last quarter). Among positions it already held, the biggest increases by share count were Wells Fargo & Co (+359%), Chipotle Mexican Grill Inc (+125%) and Goldman Sachs Group Inc (+106%), and the biggest cuts were Micron Technology Inc (−77%), Sandisk Corp (−68%) and Alphabet Inc (−49%).

When is Two Sigma Investments' next 13F due?

OPEN
The Q3 2026 13F is due Nov 16, 2026. Forty-five days after the quarter ends is November 14, 2026 (Saturday), so the deadline moves to the next business day. Siegel & Overdeck's filing usually lands close to the deadline.

Filers with overlapping books