SEC 13F Intelligence

Managers / Q1 2026

Greenstone Partners & Co., LLC

CIK 0001845565 · 60 E. SIR FRANCIS DRAKE BLVD, SUITE 300, LARKSPUR, CA, 94939 · (415) 634-6721

Reported Value
$395M
Q1 2026
Positions
9
Filings on Record
22
2019–present window
Filed
May 14, 2026
original filing

Summary

Greenstone Partners & Co., LLC reported $395M in U.S.-listed holdings across 9 positions for Q1 2026.

Its largest position, APP, represents 19.7% of the portfolio.

Compared with Q4 2025, the fund opened 0 new positions and exited 2.

Portfolio Metrics

Turnover
+24.0%
vs prior filed quarter
Largest Position
+19.7%
Applovin

Methodology: turnover is min(value bought, value sold) ÷ average reported value across the two quarters — value-based, so market moves inflate it slightly versus a share-based measure. Concentration and largest position are shares of the filing’s total reported value, options excluded. New/exited counts compare against the prior filed quarter. All figures derive solely from the fund’s 13F filings.

Reported Value by Quarter

13F Reported Value
Q4 ’20: $117MQ4 ’20Q1 ’21: $119MQ2 ’21: $133MQ3 ’21: $133MQ3 ’21Q4 ’21: $138MQ1 ’22: $116MQ2 ’22: $94MQ2 ’22Q3 ’22: $100MQ4 ’22: $107MQ1 ’23: $132MQ1 ’23Q2 ’23: $146MQ3 ’23: $151MQ4 ’23: $179MQ4 ’23Q1 ’24: $223MQ2 ’24: $239MQ3 ’24: $287MQ3 ’24Q4 ’24: $426MQ1 ’25: $377MQ2 ’25: $427MQ2 ’25Q4 ’25: $547MQ1 ’26: $395Mfilingsflow.com

Portfolio Composition

By security type
Common Stock: 100.0%
  • Common Stock · 100.0% · $395M

Quarter-over-Quarter Changes full breakdown →

vs Q4 2025 (amended baseline)

IssuerMoveShare ΔShares nowValue ΔValue now
CHTRCHARTER COMMUNICATIONS INCADDED+146.8K174.2K+$30M$38M
GWREGUIDEWIRE SOFTWARE INCADDED+278.4K404.3K+$32M$60M
TPDSOMNIGROUP INTERNATIONAL INCADDED+296.3K568.4K+$19M$42M
APPFAPPFOLIO INCADDED+140.7K273.5K+$7M$43M
LBRDKLIBERTY BROADBAND CL CSOLD OUT−547.9K0−$35M$0
PARPAR TECHNOLOGY CORPSOLD OUT−638.4K0−$25M$0
XPOXPO INCTRIMMED−162.7K27.7K−$19M$5M
VSTSVESTIS CORPORATIONADDED+1.95M5.09M+$26M$40M

Value changes conflate price moves with buying and selling — share changes are the real signal. Share counts are not split-adjusted.

Holdings — Q1 2026

9 positions
Export to Excel
#IssuerClass% PortfolioValue ↓Shares
1APPAPPLOVIN CORPhistory →COM CL A19.67%$78M195.3K
2GWREGUIDEWIRE SOFTWARE INChistory →COM15.31%$60M404.3K
3AYIACUITY INChistory →COM12.75%$50M179.7K
4APPFAPPFOLIO INChistory →COM CL A10.93%$43M273.5K
5TPDSOMNIGROUP INTERNATIONAL INChistory →COM10.63%$42M568.4K
6VSTSVESTIS CORPORATIONhistory →COM SHS10.14%$40M5.09M
7PCORPROCORE TECHNOLOGIES INChistory →COM9.70%$38M672.4K
8CHTRCHARTER COMMUNICATIONS INChistory →CL A9.52%$38M174.2K
9XPOXPO INChistory →COM1.36%$5M27.7K

Filing History

QuarterReported ValuePositionsFiledTypeLinks
Q1 2026$395M9May 14, 202613F-HRchanges · EDGAR ↗
Q4 2025$547M11Feb 25, 202613F-HRchanges · EDGAR ↗
Q2 2025$427M11Aug 14, 202513F-HRchanges · EDGAR ↗
Q1 2025$377M10May 14, 202513F-HRchanges · EDGAR ↗
Q4 2024$426M9Feb 14, 202513F-HRchanges · EDGAR ↗
Q3 2024$287M9Nov 14, 202413F-HRchanges · EDGAR ↗
Q2 2024$239M9Aug 13, 202413F-HRchanges · EDGAR ↗
Q1 2024$223M9May 9, 202413F-HRchanges · EDGAR ↗
Q4 2023$179M9Feb 14, 202413F-HRchanges · EDGAR ↗
Q3 2023$151M9Nov 14, 202313F-HRchanges · EDGAR ↗
Q2 2023$146M10Aug 14, 202313F-HRchanges · EDGAR ↗
Q1 2023$132M11May 15, 202313F-HRchanges · EDGAR ↗
Q4 2022$107M10Feb 13, 202313F-HRchanges · EDGAR ↗
Q3 2022$100M10Nov 14, 202213F-HRchanges · EDGAR ↗
Q2 2022$94M10Aug 15, 202213F-HRchanges · EDGAR ↗
Q1 2022$116M10May 13, 202213F-HRchanges · EDGAR ↗
Q4 2021$138M11Feb 14, 202213F-HRchanges · EDGAR ↗
Q3 2021$133M12Nov 10, 202113F-HRchanges · EDGAR ↗
Q2 2021$133M10Aug 6, 202113F-HRchanges · EDGAR ↗
Q1 2021$119M10May 13, 202113F-HRchanges · EDGAR ↗
Q4 2020$117M10Feb 12, 202113F-HRchanges · EDGAR ↗

13F filings are due up to 45 days after quarter end, so holdings shown here lag the fund’s current book. Source: original SEC filing on EDGAR ↗.