First seen by DFX
Sep 13, 2026
date not stated
Greenstone Partners & Co., LLC: CANDIDATE_FAMILY_OFFICE -> NOT_FAMILY_OFFICE (Greenstone Partners of Larkspur CA is a private investment partnership with an investor portal running concentrated public equity strategies, a fund manager rather than a family office.)
First seen by DFX
Sep 12, 2026
date not stated
Greenstone Partners & Co., LLC files Form 13F (known_office, $514,433,338 in 12 positions)
First seen by DFX
Sep 12, 2026
date not stated
Greenstone Partners & Co., LLC: CANDIDATE_FAMILY_OFFICE -> CANDIDATE_FAMILY_OFFICE (13F filer that is on no adviser roster and is not institutional by name: could be an SFO, a corporate treasury or a trust company)
Greenstone Partners & Co., LLC reported $395,073,140 across 9 13(f) positions for the quarter ended 2026-03-31
Greenstone Partners & Co., LLC reduced XPO Inc 193,703 -> 27,715 shares ($26,326,175 -> $5,391,953)
Greenstone Partners & Co., LLC exited GCI Liberty Inc (was $11,731,643, 315,282 shares)
Greenstone Partners & Co., LLC exited Liberty Broadband Corp (was $37,501,315, 771,632 shares)
Greenstone Partners & Co., LLC exited PAR Technology Corp (was $36,980,603, 1,019,311 shares)
Greenstone Partners & Co., LLC increased Appfolio Inc 187,609 -> 273,497 shares ($43,647,234 -> $43,163,297)
Greenstone Partners & Co., LLC increased Charter Communications Inc 4,358 -> 174,158 shares ($909,733 -> $37,597,229)
Greenstone Partners & Co., LLC increased Guidewire Software Inc 185,956 -> 404,319 shares ($37,379,016 -> $60,469,950)
Greenstone Partners & Co., LLC increased Procore Technologies Inc 522,802 -> 672,423 shares ($38,028,617 -> $38,328,111)
Greenstone Partners & Co., LLC reported $546,899,378 across 11 13(f) positions for the quarter ended 2025-09-30
Greenstone Partners & Co., LLC reported $514,433,338 across 12 13(f) positions for the quarter ended 2025-12-31
Greenstone Partners & Co., LLC increased Appfolio Inc 132,776 -> 187,609 shares ($36,601,032 -> $43,647,234)
Greenstone Partners & Co., LLC increased Guidewire Software Inc 125,956 -> 185,956 shares ($28,952,246 -> $37,379,016)
Greenstone Partners & Co., LLC increased Liberty Broadband Corp 547,890 -> 771,632 shares ($34,812,931 -> $37,501,315)
Greenstone Partners & Co., LLC increased PAR Technology Corp 638,426 -> 1,019,311 shares ($25,268,901 -> $36,980,603)
Greenstone Partners & Co., LLC increased Somnigroup International Inc 272,017 -> 525,774 shares ($22,939,194 -> $46,941,103)
Greenstone Partners & Co., LLC increased Vestis Corporation 3,148,425 -> 5,094,356 shares ($14,262,365 -> $33,979,355)
Greenstone Partners & Co., LLC opened a $11,731,643 position in GCI Liberty Inc (315,282 shares)
Greenstone Partners & Co., LLC reduced Applovin Corp 344,251 -> 195,251 shares ($247,358,114 -> $131,564,029)
Greenstone Partners & Co., LLC reduced Charter Communications Inc N 27,408 -> 4,358 shares ($7,540,078 -> $909,733)
Greenstone Partners & Co., LLC reported $426,762,745 across 11 13(f) positions for the quarter ended 2025-06-30
Greenstone Partners & Co., LLC reduced Guidewire Software Inc 179,558 -> 127,516 shares ($33,641,987 -> $30,023,642)
Greenstone Partners & Co., LLC opened a $10,999,910 position in Vestis Corporation (1,919,705 shares)
Greenstone Partners & Co., LLC reported $376,665,192 across 10 13(f) positions for the quarter ended 2025-03-31
Greenstone Partners & Co., LLC reduced Applovin Corp 692,439 -> 404,315 shares ($224,232,521 -> $107,131,346)
Greenstone Partners & Co., LLC increased Charter Communications Inc 43,175 -> 129,428 shares ($14,799,095 -> $47,698,101)
Greenstone Partners & Co., LLC increased Schwab Charles Corp 218,842 -> 436,275 shares ($16,196,496 -> $34,151,607)
Greenstone Partners & Co., LLC opened a $18,289,568 position in XPO Inc (170,009 shares)
Greenstone Partners & Co., LLC increased Acuity Brands Inc 110,075 -> 161,542 shares ($32,156,210 -> $42,542,086)
Greenstone Partners & Co., LLC reported $426,207,975 across 9 13(f) positions for the quarter ended 2024-12-31