Oberndorf William E 13F Portfolio

CIK 1218663 Filing since Q2 2014 Q2 2026 filed Aug 13, 2026
Holdings as of Jun 30, 2026, from the 13F filed Aug 13, 2026.

Portfolio Snapshot

8 positions · Q2 2026

Oberndorf William E reported 8 positions worth $55.02M for the quarter ended Jun 30, 2026, up 3.1% on the prior quarter. It opened 2 new positions, added to 1, trimmed 1 and exited 1. Its largest holding is Unitedhealth Group Inc at 26.9% of the portfolio.

Portfolio Value
$55.02M
+3.1% QoQ · -39.2% YoY
Positions
8
2 new · 1 sold out
Top 10 Concentration
100%
of portfolio value
Largest Position
UNH 26.9%
Unitedhealth Group Inc
Net Buying
-$643.87K
$8.42M bought · $9.06M sold
Turnover
15.5%
of the portfolio traded
Top Sector
Technology
45.2% of value
Track Record
49
quarters on file since Q2 2014

Portfolio Value & Positions

Value Positions

Reported 13F market value at each quarter end. A change mixes trading with price moves in the positions held.

Sector Allocation

4 sectors
45.23%
Technology
Technology45.23%
Healthcare26.86%
Consumer Discretionary15.61%
Other12.31%

Quarterly Buying & Selling

Bought Sold

Dollar value of shares bought and sold each quarter, at that quarter’s price. It counts trading only, not price changes.

Position Changes

How many positions were opened, added to, trimmed or closed each quarter.

Sector Allocation Over Time

Share of reported value in each sector at every quarter end.

TechnologyHealthcareConsumer DiscretionaryOtherCommunication ServicesIndustrialsConsumer Staples

Largest Buys

Q2 2026
Holding Change Change % Trade Value Weight
GOOG Alphabet Inc. +12.7K – $4.49M 8.17%
MNDY monday.com Ltd. +36.7K – $2.66M 4.83%
GWRE Guidewire Software, Inc. +10.2K +16.6% $1.26M 16.1%

Largest Sells

Q2 2026
Holding Change Change % Trade Value Weight
TEAM Atlassian Corp -70.6K -100.0% $4.82M Exited
ADSK Autodesk, Inc. -21.8K -83.1% $4.24M 1.56%

New Positions

Q2 2026
Holding Shares Trade Value Weight
GOOG Alphabet Inc. +12.7K $4.49M 8.17%
MNDY monday.com Ltd. +36.7K $2.66M 4.83%

Closed Positions

Q2 2026
Holding Shares Sold Trade Value Prior Weight
TEAM Atlassian Corp -70.6K $4.82M 9.04%
Holdings · Q2 2026

8 Positions

As ofJun 30, 2026
Value$55.02M
Top 10100%
Avg position$6.88M
# Activity
Showing all 8 positions 13F filings on SEC EDGAR

Tip. Select a row to see that position’s full history at Oberndorf William E.

About Oberndorf William E’s 13F Portfolio

What are Oberndorf William E’s largest holdings?

As of its Q2 2026 13F filing, Oberndorf William E’s five largest positions were Unitedhealth Group Inc (UNH) at 26.9%, Guidewire Software, Inc. (GWRE) at 16.1%, Amazon Com Inc (AMZN) at 15.6%, Veeva Systems Inc (VEEV) at 14.6%, Sprott Physical Gold Trust (PHYS) at 12.3% of the reported portfolio.

How much is Oberndorf William E’s portfolio worth?

Oberndorf William E reported a 13F portfolio worth $55.02M across 8 positions for Q2 2026. That is up 3.1% from the previous quarter.

What did Oberndorf William E buy in Q2 2026?

Its largest purchases by value were Alphabet Inc. ($4.49M), monday.com Ltd. ($2.66M), Guidewire Software, Inc. ($1.26M). It opened 2 new positions.

What did Oberndorf William E sell in Q2 2026?

Its largest sales by value were Atlassian Corp ($4.82M), Autodesk, Inc. ($4.24M). It exited 1 positions entirely.

Where does this data come from?

From the Form 13F-HR reports Oberndorf William E files with the SEC each quarter, within 45 days of quarter end. A 13F lists long positions in US-listed equities and options; it excludes short positions, cash, bonds and most non-US holdings.

Similar-Sized Institutions

by reported 13F value

13F data reflects long positions in US-listed equities and options as reported to the SEC up to 45 days after quarter end. It excludes short positions, cash, bonds and most non-US securities, so it is not a complete picture of a manager’s assets.