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RDST Capital LLC

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13F filer, CIK 1912187, SEATTLE, WA

RDST Capital LLC reported $1,061,343,686 across 19 holdings for the quarter ended 2025-12-31, in a 13F-HR filed 2026-02-17. Its ten largest share positions make up 68.43% of the portfolio.

Filed (acceptance time not in the bulk data set), ingested 13F-HR 0001420506-26-000500

Period
2025-12-31
Reported value
$1.06B
Holdings
19
Top 10 weight
68.43%
New
3
Sold out
3

Largest buys vs the previous quarter

SecurityShares changeApprox. value
JHXnew+2,693,617$55.9M
CPNGnew+2,154,400$50.8M
OWLadded+1,774,670$26.5M
TSMnew+84,040$25.5M
UNPadded+83,450$19.3M

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
CSXexited-1,517,825-$53.9M
AMATexited-261,147-$53.5M
MRVLreduced-567,950-$48.3M
WDAYexited-199,545-$48M
DDOGreduced-102,745-$14M

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, Q4 2025

Share positions as resolved from 13F-HR 0001420506-26-000500, largest first. % of portfolio is the value over $1,061,343,686, the sum of the share positions whose value is usable for ratios (method).

SecurityHistorySharesValue% of portfolioChangeLatest eventTimeline
UNPUNION PAC CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: 336,645 shares; 2025Q4: 420,095 shares 420,095$97.2M9.16%+83,450Timeline
OWLBLUE OWL CAPITAL INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 2,085,955 shares; 2024Q4: 1,728,545 shares; 2025Q1: 1,964,350 shares; 2025Q2: 3,381,080 shares; 2025Q3: 4,490,815 shares; 2025Q4: 6,265,485 shares 6,265,485$93.6M8.82%+1,774,670Timeline
ENTGENTEGRIS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: 532,115 shares; 2025Q1: 774,420 shares; 2025Q2: 1,102,675 shares; 2025Q3: 956,780 shares; 2025Q4: 1,105,625 shares 1,105,625$93.1M8.78%+148,845Timeline
MSFTMICROSOFT CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 100,725 shares; 2024Q4: 167,220 shares; 2025Q1: 203,845 shares; 2025Q2: 158,240 shares; 2025Q3: 140,355 shares; 2025Q4: 155,875 shares 155,875$75.4M7.1%+15,520Timeline
AMZNAMAZON COM INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 117,420 shares; 2024Q4: 188,930 shares; 2025Q1: 246,140 shares; 2025Q2: 312,080 shares; 2025Q3: 281,775 shares; 2025Q4: 311,605 shares 311,605$71.9M6.78%+29,830Timeline
HUBSHUBSPOT INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: 121,505 shares; 2025Q4: 157,785 shares 157,785$63.3M5.97%+36,280Timeline
MLMMARTIN MARIETTA MATLS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: 105,540 shares; 2025Q3: 111,575 shares; 2025Q4: 101,500 shares 101,500$63.2M5.95%-10,075Timeline
FNDFLOOR & DECOR HLDGS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: 669,870 shares; 2025Q3: 756,750 shares; 2025Q4: 925,247 shares 925,247$56.3M5.31%+168,497Timeline
MKTXMARKETAXESS HLDGS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: 34,225 shares; 2025Q2: 109,005 shares; 2025Q3: 281,547 shares; 2025Q4: 310,697 shares 310,697$56.3M5.31%+29,150Timeline
JHXJAMES HARDIE INDS PLCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: not reported; 2025Q4: 2,693,617 shares 2,693,617$55.9M5.27%newTimeline
CVNACARVANA COQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: 222,940 shares; 2025Q2: 136,885 shares; 2025Q3: 107,205 shares; 2025Q4: 122,262 shares 122,262$51.6M4.86%+15,057Timeline
CPNGCOUPANG INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: not reported; 2025Q4: 2,154,400 shares 2,154,400$50.8M4.79%newTimeline
DDOGDATADOG INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: 327,450 shares; 2025Q2: 466,665 shares; 2025Q3: 475,095 shares; 2025Q4: 372,350 shares 372,350$50.6M4.77%-102,745Timeline
METAMETA PLATFORMS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: 36,355 shares; 2025Q3: 50,955 shares; 2025Q4: 62,405 shares 62,405$41.2M3.88%+11,450Timeline
DCODUCOMMUN INC DELQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 540,290 shares; 2024Q4: 557,259 shares; 2025Q1: 628,803 shares; 2025Q2: 568,791 shares; 2025Q3: 501,496 shares; 2025Q4: 390,363 shares 390,363$37.1M3.5%-111,133Timeline
DASHDOORDASH INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 176,760 shares; 2024Q4: 206,450 shares; 2025Q1: 170,395 shares; 2025Q2: 169,550 shares; 2025Q3: 48,570 shares; 2025Q4: 133,535 shares 133,535$30.2M2.85%+84,965Timeline
APOAPOLLO GLOBAL MGMT INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 285,860 shares; 2024Q4: 233,495 shares; 2025Q1: 117,255 shares; 2025Q2: 147,990 shares; 2025Q3: 147,055 shares; 2025Q4: 179,530 shares 179,530$26M2.45%+32,475Timeline
TSMTAIWAN SEMICONDUCTOR MANUFACQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: not reported; 2025Q4: 84,040 shares 84,040$25.5M2.41%newTimeline
MRVLMARVELL TECHNOLOGY INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 424,650 shares; 2024Q4: 427,380 shares; 2025Q1: 496,505 shares; 2025Q2: 434,175 shares; 2025Q3: 825,485 shares; 2025Q4: 257,535 shares 257,535$21.9M2.06%-567,950Timeline

Sold out in Q4 2025

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

SecurityShares beforeValue beforeType
CSXCSX CORP1,517,825$53.9Mshares
AMATAPPLIED MATLS INC261,147$53.5Mshares
WDAYWORKDAY INC199,545$48Mshares

How Q4 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 0001420506-26-000500 base2026-02-17acceptance time not in the bulk data set