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Starboard Value LP

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13F filer, CIK 1517137, New York, NY

Starboard Value LP reported $4,523,797,468 across 22 holdings for the quarter ended 2026-06-30, in a 13F-HR filed 2026-08-14. Its ten largest share positions make up 84.34% of the portfolio.

Filed (acceptance time not in the bulk data set), ingested 13F-HR 0000921895-26-002172

Period
2026-06-30
Reported value
$4.52B
Holdings
22
Top 10 weight
84.34%
New
2
Sold out
6

Part of the filer group Starboard Value LP

How groups are built

Largest buys vs the previous quarter

SecurityShares changeApprox. value
DTnew+8,866,692$389M
IJHadded+3,047,125$235M
FLSnew+1,441,600$107M
BILLadded+900$32.5K

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
QRVOreduced-1,899,345-$177M
KMXreduced-2,994,924-$158M
RIOTreduced-5,430,000-$149M
GENexited-7,806,922-$147M
MTCHreduced-3,620,254-$138M

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, Q2 2026

Share positions as resolved from 13F-HR 0000921895-26-002172, largest first. % of portfolio is the value over $4,521,878,950, the sum of the share positions whose value is usable for ratios (method).

SecurityHistorySharesValue% of portfolioChangeLatest eventTimeline
IJHISHARES TRQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: not reported; 2024Q4: 3,965,268 shares; 2025Q1: 3,564,875 shares; 2025Q2: 5,250,656 shares; 2025Q3: 5,250,656 shares; 2025Q4: 5,250,656 shares; 2026Q1: 5,830,656 shares; 2026Q2: 8,877,781 shares 8,877,781$685M15.14%+3,047,125Timeline
QRVOQORVO INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: 8,270,000 shares; 2025Q2: 7,872,867 shares; 2025Q3: 7,510,871 shares; 2025Q4: 7,510,871 shares; 2026Q1: 7,510,871 shares; 2026Q2: 5,611,526 shares 5,611,526$523M11.57%-1,899,3452026-10-05, 13D/A: 0 shares, 0% of the class, 13D/A filed 2026-10-06 Timeline
KVUEKENVUE INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: not reported; 2024Q4: 21,914,000 shares; 2025Q1: 22,054,000 shares; 2025Q2: 20,929,938 shares; 2025Q3: 20,929,938 shares; 2025Q4: 27,307,632 shares; 2026Q1: 27,307,632 shares; 2026Q2: 27,307,632 shares 27,307,632$522M11.54%0Timeline
DTDYNATRACE INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: not reported; 2025Q4: not reported; 2026Q1: not reported; 2026Q2: 8,866,692 shares 8,866,692$389M8.61%newTimeline
AQNALGONQUIN POWER & UTILITIESQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: 62,141,000 shares; 2024Q4: 65,316,000 shares; 2025Q1: 66,433,000 shares; 2025Q2: 63,489,420 shares; 2025Q3: 63,489,420 shares; 2025Q4: 63,489,420 shares; 2026Q1: 57,189,420 shares; 2026Q2: 57,189,420 shares 57,189,420$335M7.41%0Timeline
MTCHMATCH GROUP INC NEWQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: 9,556,146 shares; 2024Q4: 14,656,970 shares; 2025Q1: 14,085,901 shares; 2025Q2: 15,311,916 shares; 2025Q3: 11,070,379 shares; 2025Q4: 11,395,379 shares; 2026Q1: 11,395,379 shares; 2026Q2: 7,775,125 shares 7,775,125$296M6.54%-3,620,254Timeline
ACTGACACIA RESH CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: 61,123,595 shares; 2024Q4: 61,123,595 shares; 2025Q1: 61,123,595 shares; 2025Q2: 61,123,595 shares; 2025Q3: 61,123,595 shares; 2025Q4: 61,123,595 shares; 2026Q1: 61,123,595 shares; 2026Q2: 61,123,595 shares 61,123,595$285M6.3%0Timeline
RIOTRIOT PLATFORMS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: not reported; 2024Q4: 12,704,035 shares; 2025Q1: 12,700,000 shares; 2025Q2: 4,676,900 shares; 2025Q3: 8,818,000 shares; 2025Q4: 12,744,576 shares; 2026Q1: 15,544,576 shares; 2026Q2: 10,114,576 shares 10,114,576$277M6.12%-5,430,000Timeline
BILLBILL HOLDINGS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: 7,024,848 shares; 2025Q4: 7,024,848 shares; 2026Q1: 7,024,848 shares; 2026Q2: 7,025,748 shares 7,025,748$254M5.62%+900Timeline
LWLAMB WESTON HLDGS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: not reported; 2025Q4: not reported; 2026Q1: 6,114,982 shares; 2026Q2: 5,733,982 shares 5,733,982$248M5.48%-381,000Timeline
KMXCARMAX INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: not reported; 2025Q4: not reported; 2026Q1: 6,201,362 shares; 2026Q2: 3,206,438 shares 3,206,438$170M3.75%-2,994,924Timeline
FLSFLOWSERVE CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: not reported; 2025Q4: not reported; 2026Q1: not reported; 2026Q2: 1,441,600 shares 1,441,600$107M2.36%newTimeline
FLRFLUOR CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: not reported; 2025Q4: 5,191,327 shares; 2026Q1: 2,886,327 shares; 2026Q2: 1,586,327 shares 1,586,327$83.1M1.84%-1,300,000Timeline
GPGIGPGI INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: not reported; 2025Q4: not reported; 2026Q1: 5,027,028 shares; 2026Q2: 5,027,028 shares 5,027,028$79.7M1.76%0Timeline
TRIPTRIPADVISOR INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: 8,499,054 shares; 2025Q3: 9,510,484 shares; 2025Q4: 9,644,996 shares; 2026Q1: 10,774,996 shares; 2026Q2: 5,096,996 shares 5,096,996$69.9M1.55%-5,678,000Timeline
NWSNEWS CORP NEWQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: 8,732,000 shares; 2024Q4: 8,482,000 shares; 2025Q1: 7,814,831 shares; 2025Q2: 6,862,525 shares; 2025Q3: 6,017,000 shares; 2025Q4: 4,439,081 shares; 2026Q1: 2,589,081 shares; 2026Q2: 2,431,081 shares 2,431,081$68.2M1.51%-158,000Timeline
NWSANEWS CORP NEWQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: 7,201,393 shares; 2024Q4: 7,201,393 shares; 2025Q1: 7,201,393 shares; 2025Q2: 6,798,936 shares; 2025Q3: 6,381,716 shares; 2025Q4: 5,895,487 shares; 2026Q1: 5,605,126 shares; 2026Q2: 2,040,100 shares 2,040,100$50.7M1.12%-3,565,026Timeline
HRHEALTHCARE RLTY TRQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: not reported; 2024Q4: 20,183,460 shares; 2025Q1: 20,072,000 shares; 2025Q2: 19,290,672 shares; 2025Q3: 14,490,036 shares; 2025Q4: 12,600,000 shares; 2026Q1: 6,821,267 shares; 2026Q2: 1,936,267 shares 1,936,267$39.1M0.86%-4,885,000Timeline
BLMNBLOOMIN BRANDS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: 8,441,000 shares; 2024Q4: 8,441,000 shares; 2025Q1: 8,441,000 shares; 2025Q2: 7,980,992 shares; 2025Q3: 7,980,992 shares; 2025Q4: 7,980,992 shares; 2026Q1: 7,980,992 shares; 2026Q2: 4,180,992 shares 4,180,992$38.2M0.85%-3,800,000Timeline
BIXIBITCOIN INFRASTRUCTURE ACQUIQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: not reported; 2025Q4: 300,000 shares; 2026Q1: 300,000 shares; 2026Q2: 300,000 shares 300,000$3M0.07%0Timeline
BIXIWBITCOIN INFRASTRUCTURE ACQUIQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: not reported; 2025Q4: not reported; 2026Q1: 149,999 shares; 2026Q2: 149,999 shares 149,999$47.5K<0.01%0Timeline

Options

Puts and calls, as filed. The amount and value describe the underlying shares, not the option premium, so they stay out of % of portfolio (H5).

SecurityTypeAmountValueChange
RIOTRIOT PLATFORMS INC COMput2,423,400$1.92M+1,630,900

Sold out in Q2 2026

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

SecurityShares beforeValue beforeType
GENGEN DIGITAL INC7,806,922$147Mshares
CWANCLEARWATER ANALYTICS HLDGS I5,459,031$129Mshares
BDXBECTON DICKINSON & CO636,494$100Mshares
ROGROGERS CORP584,328$62.7Mshares
HYGISHARES TR3,000,000$3Mput
IWMISHARES TR683,100$2.7Mput

How Q2 2026 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 0000921895-26-002172 base2026-08-14acceptance time not in the bulk data set