Round Rock Advisors LLC 13F holdings
Round Rock Advisors LLC reported 250 positions with a total reported value of $776.4M as of 2026-06-30, in its 13F for Q2 2026, filed 2026-08-12. Top holdings by reported value: ISHARES TR (11.1%), QQQ INVESCO QQQ TR (7.9%), SELECT SECTOR SPDR TR (7.3%), VANECK ETF TRUST (7.2%), VANGUARD WHITEHALL FDS (6.7%). Against 2026-03-31 it opened 24 new positions and exited 29. Next 13F due by 2026-11-14, the legal deadline 45 days after the quarter ending 2026-09-30.
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Top holdings
25 largest of 250 positions · reported value as of 2026-06-30
| Holding | Shares | Reported value | % of portfolio |
|---|---|---|---|
| ISHARES TR | 810,842 | $86.2M | 11.1% |
| QQQ INVESCO QQQ TR | 82,898 | $61.0M | 7.9% |
| SELECT SECTOR SPDR TR | 427,611 | $57.0M | 7.3% |
| VANECK ETF TRUST | 91,436 | $55.8M | 7.2% |
| VANGUARD WHITEHALL FDS | 334,993 | $52.3M | 6.7% |
| J P MORGAN EXCHANGE TRADED F | 1,004,627 | $51.2M | 6.6% |
| VANGUARD INDEX FDS | 423,606 | $40.1M | 5.2% |
| AAPL APPLE INC | 66,412 | $19.2M | 2.5% |
| IVZ INVESCO EXCH TRADED FD TR II | 81,468 | $16.9M | 2.2% |
| AMERICAN CENTY ETF TR | 324,038 | $16.6M | 2.1% |
| GOOGL ALPHABET INC | 46,616 | $16.5M | 2.1% |
| BRK-B BERKSHIRE HATHAWAY INC DEL | 4,889 | $15.9M | 2.1% |
| NEUBERGER BERMAN ETF TRUST | 257,509 | $13.0M | 1.7% |
| MSFT MICROSOFT CORP | 31,894 | $11.9M | 1.5% |
| AMZN AMAZON COM INC | 33,963 | $8.1M | 1.0% |
| SPY STATE STR SPDR S&P 500 ETF T | 10,145 | $7.6M | 1.0% |
| NVDA NVIDIA CORPORATION | 23,521 | $4.7M | 0.6% |
| ABBV ABBVIE INC | 18,032 | $4.5M | 0.6% |
| HZO MARINEMAX INC | 120,030 | $4.4M | 0.6% |
| XOM EXXON MOBIL CORP | 31,771 | $4.3M | 0.6% |
| VANGUARD WORLD FD | 32,882 | $4.1M | 0.5% |
| UNH UNITEDHEALTH GROUP INC | 9,062 | $3.8M | 0.5% |
| MU MICRON TECHNOLOGY INC | 2,909 | $3.4M | 0.4% |
| SCHWAB STRATEGIC TR | 96,547 | $3.3M | 0.4% |
| IBM INTERNATIONAL BUSINESS MACHS | 11,577 | $3.3M | 0.4% |
SEC FORM 13F · Q2 2026 · VALUES AS REPORTED, NOT PRICES
New positions this quarter
Held at 2026-06-30, not at 2026-03-31 · 24 in all · reported value as of 2026-06-30
| Holding | Shares | Reported value | % of portfolio |
|---|---|---|---|
| IBIT ISHARES BITCOIN TRUST ETF | 93,841 | $3.1M | 0.4% |
| TMS TEAMSHARES INC | 277,236 | $2.3M | 0.3% |
| TDAY USA TODAY CO INC | 249,273 | $2.1M | 0.3% |
| KEEL KEEL INFRASTRUCTURE CORP | 248,247 | $1.4M | 0.2% |
| HAPPEN INC | 65,554 | $1.4M | 0.2% |
| HONA HONEYWELL AEROSPACE INC | 4,480 | $990.2K | 0.1% |
| SND SMART SAND INC | 162,334 | $813.3K | 0.1% |
| OMDA OMADA HEALTH INC | 33,932 | $744.8K | <0.1% |
| GENI GENIUS SPORTS LIMITED | 98,245 | $595.4K | <0.1% |
| RES RPC INC | 100,088 | $583.5K | <0.1% |
| XRAY DENTSPLY SIRONA INC | 53,922 | $572.0K | <0.1% |
| FENC FENNEC PHARMACEUTICALS INC | 48,683 | $523.3K | <0.1% |
| TUSK MAMMOTH ENERGY SVCS INC | 152,841 | $496.7K | <0.1% |
| KVH INDS INC | 36,376 | $360.5K | <0.1% |
| TCBK TRICO BANCSHARES | 6,685 | $360.0K | <0.1% |
| HWKN HAWKINS INC | 2,366 | $336.2K | <0.1% |
| OPLN OPENLANE INC | 7,640 | $315.1K | <0.1% |
| TGTX TG THERAPEUTICS INC | 4,964 | $272.7K | <0.1% |
| TIDAL TRUST III | 2,773 | $236.6K | <0.1% |
| SAIA SAIA INC | 561 | $236.3K | <0.1% |
| SNDR SCHNEIDER NATIONAL INC | 6,401 | $233.8K | <0.1% |
| CSCO CISCO SYS INC | 1,827 | $214.6K | <0.1% |
| LLY ELI LILLY & CO | 177 | $212.2K | <0.1% |
| ISHARES INC | 2,525 | $209.2K | <0.1% |
Sold out
Held at 2026-03-31, gone by 2026-06-30 · 29 in all · reported value as of 2026-03-31
| Holding | Shares 2026-03-31 | Reported value | % of portfolio then |
|---|---|---|---|
| EZBC FRANKLIN TEMPLETON DIGITAL H | 54,727 | $2.1M | 0.3% |
| LIVE OAK ACQUISITION CORP V | 136,705 | $1.4M | 0.2% |
| TDOC TELADOC HEALTH INC | 233,868 | $1.3M | 0.2% |
| LENDINGCLUB ISSUANCE TR SER | 65,554 | $938.7K | 0.1% |
| SWIM LATHAM GROUP INC | 164,558 | $883.7K | 0.1% |
| CCLD CARECLOUD INC | 216,388 | $789.8K | 0.1% |
| BITFARMS LTD | 248,493 | $678.4K | 0.1% |
| CRMD CORMEDIX INC | 92,681 | $629.3K | <0.1% |
| BDTX BLACK DIAMOND THERAPEUTICS I | 274,367 | $584.4K | <0.1% |
| ARLO ARLO TECHNOLOGIES INC | 38,355 | $545.8K | <0.1% |
| BXC BLUELINX HLDGS INC | 10,017 | $542.7K | <0.1% |
| EYE NATIONAL VISION HLDGS INC | 18,717 | $484.8K | <0.1% |
| AORT ARTIVION INC | 13,223 | $484.2K | <0.1% |
| ACA ARCOSA INC | 4,374 | $464.3K | <0.1% |
| PLX PROTALIX BIOTHERAPEUTICS INC | 192,080 | $416.8K | <0.1% |
| AMPH AMPHASTAR PHARMACEUTICALS IN | 20,495 | $401.5K | <0.1% |
| FIRST TR EXCHNG TRADED FD VI | 11,000 | $388.5K | <0.1% |
| OSIS OSI SYSTEMS INC | 1,243 | $330.0K | <0.1% |
| ATEC ALPHATEC HLDGS INC | 29,920 | $325.5K | <0.1% |
| ESPERION THERAPEUTICS INC NE | 101,553 | $278.3K | <0.1% |
| PACER FDS TR | 5,740 | $257.6K | <0.1% |
| PRIMORIS SVCS CORP | 1,736 | $248.3K | <0.1% |
| SLV ISHARES SILVER TR | 3,616 | $246.4K | <0.1% |
| RIGL RIGEL PHARMACEUTICALS INC | 8,754 | $236.7K | <0.1% |
| AKEBIA THREAPEUTICS INC | 166,089 | $230.9K | <0.1% |
Biggest increases and decreases
Positions held at both quarter ends, by change in shares · reported value as of 2026-06-30
Increases
| Holding | Shares 2026-03-31 | Shares 2026-06-30 | Change | Reported value |
|---|---|---|---|---|
| VANGUARD INDEX FDS | 119,075 | 423,606 | +255.7% | $40.1M |
| BRK-B BERKSHIRE HATHAWAY INC DEL | 3,960 | 4,889 | +23.5% | $15.9M |
| SELECT SECTOR SPDR TR | 408,877 | 427,611 | +4.6% | $57.0M |
| J P MORGAN EXCHANGE TRADED F | 958,141 | 1,004,627 | +4.9% | $51.2M |
| HZO MARINEMAX INC | 62,509 | 120,030 | +92.0% | $4.4M |
| QQQ INVESCO QQQ TR | 80,064 | 82,898 | +3.5% | $61.0M |
| VANGUARD WORLD FD | 16,231 | 32,882 | +102.6% | $4.1M |
| AMERICAN CENTY ETF TR | 287,522 | 324,038 | +12.7% | $16.6M |
| VANGUARD WHITEHALL FDS | 323,146 | 334,993 | +3.7% | $52.3M |
| IVZ INVESCO EXCH TRADED FD TR II | 73,760 | 81,468 | +10.5% | $16.9M |
| FTK FLOTEK INDUSTRIES INC | 26,851 | 81,471 | +203.4% | $1.9M |
| WYFI WHITEFIBER INC | 18,405 | 45,386 | +146.6% | $1.8M |
Decreases
| Holding | Shares 2026-03-31 | Shares 2026-06-30 | Change | Reported value |
|---|---|---|---|---|
| VANECK ETF TRUST | 94,019 | 91,436 | -2.7% | $55.8M |
| HONEYWELL INTL INC | 8,972 | 4,480 | -50.1% | $1.0M |
| CPSH CPS TECHNOLOGIES CORP | 435,522 | 283,951 | -34.8% | $1.6M |
| LBRT LIBERTY ENERGY INC | 74,844 | 45,279 | -39.5% | $1.2M |
| MU MICRON TECHNOLOGY INC | 3,457 | 2,909 | -15.9% | $3.4M |
| BKSY BLACKSKY TECHNOLOGY INC | 54,451 | 35,038 | -35.7% | $978.3K |
| SPOT SPOTIFY TECHNOLOGY S A | 2,663 | 1,503 | -43.6% | $690.1K |
| LSTR LANDSTAR SYS INC | 4,684 | 2,374 | -49.3% | $491.0K |
| REX REX AMERICAN RES CORP | 33,424 | 23,197 | -30.6% | $1.0M |
| ARRY ARRAY TECHNOLOGIES INC | 133,803 | 71,605 | -46.5% | $530.6K |
| XERS XERIS BIOPHARMA HOLDINGS INC | 96,816 | 46,102 | -52.4% | $365.1K |
| ATMU ATMUS FILTRATION TECHNOLOGIE | 12,478 | 6,789 | -45.6% | $346.2K |
CIK 1846991 · 13F FILINGS ON EDGAR · INFORMATIONAL ONLY
