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Greenstone Partners & Co., LLC

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13F filer, CIK 1845565, LARKSPUR, CA

Greenstone Partners & Co., LLC reported $546,899,378 across 11 holdings for the quarter ended 2025-09-30, in a 13F-HR filed 2026-02-25. Its ten largest share positions make up 98.62% of the portfolio.

Filed (acceptance time not in the bulk data set), ingested 13F-HR 0001420506-26-000618

Period
2025-09-30
Reported value
$547M
Holdings
11
Top 10 weight
98.62%
New
2
Sold out
2

Largest buys vs the previous quarter

SecurityShares changeApprox. value
LBRDKnew+547,890$34.8M
SGInew+272,017$22.9M
PCORadded+201,063$14.7M
VSTSadded+1,228,720$5.57M
PARadded+107,113$4.24M

Ranked by the share change valued at this quarter's implied price (value over shares in the 13F). A position sold out is valued at the previous quarter's price, its last report.

Largest sells vs the previous quarter

SecurityShares changeApprox. value
SCHWexited-361,845-$33M
CHTRreduced-87,730-$24.1M
MERIDIANLINK INCexited-693,943-$11.3M
APPreduced-4,264-$3.06M
AYIreduced-2,389-$823K

Ranked by the share change valued at this quarter's implied price (value over shares in the 13F). A position sold out is valued at the previous quarter's price, its last report.

Holdings, Q3 2025

Share positions as resolved from 13F-HR 0001420506-26-000618, largest first. % of portfolio is the value over $546,899,378, the sum of the share positions whose value is usable for ratios (method).

SecurityHistorySharesValue% of portfolioChangeLatest eventTimeline
APPAPPLOVIN CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 796,837 shares; 2024Q4: 692,439 shares; 2025Q1: 404,315 shares; 2025Q2: 348,515 shares; 2025Q3: 344,251 shares 344,251$247M45.23%-4,264Timeline
AYIACUITY INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 110,075 shares; 2024Q4: 110,075 shares; 2025Q1: 161,542 shares; 2025Q2: 195,269 shares; 2025Q3: 192,880 shares 192,880$66.4M12.15%-2,389Timeline
PCORPROCORE TECHNOLOGIES INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 325,558 shares; 2024Q4: 325,558 shares; 2025Q1: 321,739 shares; 2025Q2: 321,739 shares; 2025Q3: 522,802 shares 522,802$38.1M6.97%+201,063Timeline
APPFAPPFOLIO INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 113,067 shares; 2024Q4: 113,067 shares; 2025Q1: 111,740 shares; 2025Q2: 134,229 shares; 2025Q3: 132,776 shares 132,776$36.6M6.69%-1,453Timeline
LBRDKLIBERTY BROADBAND CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: 547,890 shares 547,890$34.8M6.37%newTimeline
GWREGUIDEWIRE SOFTWARE INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 181,689 shares; 2024Q4: 181,689 shares; 2025Q1: 179,558 shares; 2025Q2: 127,516 shares; 2025Q3: 125,956 shares 125,956$29M5.29%-1,560Timeline
PARPAR TECHNOLOGY CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 569,761 shares; 2024Q4: 569,761 shares; 2025Q1: 563,073 shares; 2025Q2: 531,313 shares; 2025Q3: 638,426 shares 638,426$25.3M4.62%+107,113Timeline
XPOXPO INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: 170,009 shares; 2025Q2: 192,784 shares; 2025Q3: 190,422 shares 190,422$24.6M4.5%-2,362Timeline
SGISOMNIGROUP INTERNATIONAL INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: 272,017 shares 272,017$22.9M4.19%newTimeline
VSTSVESTIS CORPORATIONQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: 1,919,705 shares; 2025Q3: 3,148,425 shares 3,148,425$14.3M2.61%+1,228,720Timeline
CHTRCHARTER COMMUNICATIONS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 43,175 shares; 2024Q4: 43,175 shares; 2025Q1: 129,428 shares; 2025Q2: 115,138 shares; 2025Q3: 27,408 shares 27,408$7.54M1.38%-87,730Timeline

Sold out in Q3 2025

Positions in the previous quarter's report that this quarter's report no longer lists.

SecurityShares beforeValue beforeType
SCHWCHARLES SCHWAB CORP (THE)361,845$33Mshares
MERIDIANLINK INCMERIDIANLINK INC693,943$11.3Mshares

How Q3 2025 was built

Available 13F filings of this filer for the quarter and their roles: the base report is the latest original or restatement, NEW HOLDINGS amendments filed after it are added (method).

FilingRoleAmendmentFiledAcceptedIngested
13F-HR 0001420506-26-000618 base2026-02-25acceptance time not in the bulk data set