Round Rock Advisors LLC reported 217 positions worth $291.46M for the quarter ended Jun 30, 2026, up 18.8% on the prior quarter. It opened 20 new positions, added to 56, trimmed 50 and exited 21. Its largest holding is Apple Inc. at 6.6% of the portfolio.
Reported 13F market value at each quarter end. A change mixes trading with price moves in the positions held.
Dollar value of shares bought and sold each quarter, at that quarter’s price. It counts trading only, not price changes.
How many positions were opened, added to, trimmed or closed each quarter.
Share of reported value in each sector at every quarter end.
| Holding | Change | Trade Value | Weight |
|---|---|---|---|
| IBIT iShares Bitcoin Trust ETF | +93.8K | $3.12M | 1.07% |
| TMS US Teamshares Inc. | +277.2K | $2.28M | 0.782% |
| TDAY USA TODAY Co., Inc. | +249.3K | $2.13M | 0.731% |
| HZO Marinemax Inc | +57.5K +92.0% | $2.11M | 1.51% |
| FTK Flotek Industries Inc | +54.6K +203.4% | $1.28M | 0.657% |
| WYFI WhiteFiber, Inc. | +27.0K +146.6% | $1.05M | 0.605% |
| HONA Honeywell Aerospace Inc. | +4,480 | $990.23K | 0.34% |
| SND Smart Sand, Inc. | +162.3K | $813.29K | 0.279% |
| OMDA Omada Health, Inc. | +33.9K | $744.81K | 0.256% |
| GENI Genius Sports Ltd | +98.2K | $595.37K | 0.204% |
| Holding | Change | Trade Value | Weight |
|---|---|---|---|
| TDOC Teladoc Health, Inc. | -233.9K -100.0% | $1.27M | Exited |
| SWIM Latham Group, Inc. | -164.6K -100.0% | $883.68K | Exited |
| CPSH Cps Technologies Corp | -151.6K -34.8% | $836.67K | 0.538% |
| CCLD CareCloud, Inc. | -216.4K -100.0% | $789.82K | Exited |
| LBRT Liberty Energy Inc. | -29.6K -39.5% | $774.31K | 0.407% |
| BRK-A Berkshire Hathaway Inc | -1 -5.3% | $748.85K | 4.62% |
| MU Micron Technology Inc | -548 -15.9% | $632.55K | 1.15% |
| CRMD CorMedix Inc. | -92.7K -100.0% | $629.30K | Exited |
| BDTX Black Diamond Therapeutics, Inc. | -274.4K -100.0% | $584.40K | Exited |
| ARLO Arlo Technologies, Inc. | -38.4K -100.0% | $545.79K | Exited |
| Holding | Shares | Trade Value | Weight |
|---|---|---|---|
| IBIT iShares Bitcoin Trust ETF | +93.8K | $3.12M | 1.07% |
| TMS US Teamshares Inc. | +277.2K | $2.28M | 0.782% |
| TDAY USA TODAY Co., Inc. | +249.3K | $2.13M | 0.731% |
| HONA Honeywell Aerospace Inc. | +4,480 | $990.23K | 0.34% |
| SND Smart Sand, Inc. | +162.3K | $813.29K | 0.279% |
| OMDA Omada Health, Inc. | +33.9K | $744.81K | 0.256% |
| GENI Genius Sports Ltd | +98.2K | $595.37K | 0.204% |
| RES Rpc Inc | +100.1K | $583.51K | 0.2% |
| XRAY DENTSPLY SIRONA Inc. | +53.9K | $572.05K | 0.196% |
| FENC Fennec Pharmaceuticals Inc. | +48.7K | $523.34K | 0.18% |
| Holding | Shares Sold | Trade Value | Prior Weight |
|---|---|---|---|
| TDOC Teladoc Health, Inc. | -233.9K | $1.27M | 0.519% |
| SWIM Latham Group, Inc. | -164.6K | $883.68K | 0.36% |
| CCLD CareCloud, Inc. | -216.4K | $789.82K | 0.322% |
| CRMD CorMedix Inc. | -92.7K | $629.30K | 0.256% |
| BDTX Black Diamond Therapeutics, Inc. | -274.4K | $584.40K | 0.238% |
| ARLO Arlo Technologies, Inc. | -38.4K | $545.79K | 0.222% |
| BXC BlueLinx Holdings Inc. | -10.0K | $542.72K | 0.221% |
| EYE National Vision Holdings, Inc. | -18.7K | $484.77K | 0.198% |
| AORT Artivion, Inc. | -13.2K | $484.23K | 0.197% |
| ACA Arcosa, Inc. | -4,374 | $464.26K | 0.189% |
| # | Activity | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | AAPL Apple Inc. | Technology | 66.4K | $19.22M | 6.59% | -409 | -0.6% | Reduced | 0% |
| 2 | BRK-A Berkshire Hathaway Inc | Financial Services | 18 | $13.48M | 4.62% | -1 | -5.3% | Reduced | 0% |
| 3 | GOOG Alphabet Inc. | Technology | 37.1K | $13.11M | 4.5% | -124 | -0.3% | Reduced | 0% |
| 4 | MSFT Microsoft Corp | Technology | 31.9K | $11.90M | 4.08% | +55 | +0.2% | Added | 0% |
| 5 | AMZN Amazon Com Inc | Consumer Discretionary | 34.0K | $8.09M | 2.78% | -114 | -0.3% | Reduced | 0% |
| 6 | NVDA Nvidia Corp | Technology | 23.5K | $4.71M | 1.61% | -254 | -1.1% | Reduced | 0% |
| 7 | ABBV AbbVie Inc. | Healthcare | 18.0K | $4.54M | 1.56% | -48 | -0.3% | Reduced | 0% |
| 8 | HZO Marinemax Inc | Consumer Discretionary | 120.0K | $4.40M | 1.51% | +57.5K | +92.0% | Added | 0.54% |
| 9 | XOM ExxonMobil Holdings Corp | Energy | 31.8K | $4.34M | 1.49% | +111 | +0.4% | Added | 0% |
| 10 | UNH Unitedhealth Group Inc | Healthcare | 9,062 | $3.77M | 1.29% | -295 | -3.2% | Reduced | 0% |
| 11 | GOOGL Alphabet Inc. | Technology | 9,510 | $3.40M | 1.17% | -48 | -0.5% | Reduced | 0% |
| 12 | MU Micron Technology Inc | Technology | 2,909 | $3.36M | 1.15% | -548 | -15.9% | Reduced | 0% |
| 13 | IBM International Business Machines Corp | Technology | 11.6K | $3.26M | 1.12% | +370 | +3.3% | Added | 0% |
| 14 | WMB Williams Companies, Inc. | Energy | 42.8K | $3.18M | 1.09% | 0 | 0.0% | Unchanged | 0% |
| 15 | IBIT iShares Bitcoin Trust ETF | Others | 93.8K | $3.12M | 1.07% | +93.8K | – | New | 0.01% |
Tip. Select a row to see that position’s full history at Round Rock Advisors.
As of its Q2 2026 13F filing, Round Rock Advisors LLC’s five largest positions were Apple Inc. (AAPL) at 6.6%, Berkshire Hathaway Inc (BRK-A) at 4.6%, Alphabet Inc. (GOOG) at 4.5%, Microsoft Corp (MSFT) at 4.1%, Amazon Com Inc (AMZN) at 2.8% of the reported portfolio.
Round Rock Advisors LLC reported a 13F portfolio worth $291.46M across 217 positions for Q2 2026. That is up 18.8% from the previous quarter.
Its largest purchases by value were iShares Bitcoin Trust ETF ($3.12M), Teamshares Inc. ($2.28M), USA TODAY Co., Inc. ($2.13M). It opened 20 new positions.
Its largest sales by value were Teladoc Health, Inc. ($1.27M), Latham Group, Inc. ($883.68K), Cps Technologies Corp ($836.67K). It exited 21 positions entirely.
From the Form 13F-HR reports Round Rock Advisors LLC files with the SEC each quarter, within 45 days of quarter end. A 13F lists long positions in US-listed equities and options; it excludes short positions, cash, bonds and most non-US holdings.
13F data reflects long positions in US-listed equities and options as reported to the SEC up to 45 days after quarter end. It excludes short positions, cash, bonds and most non-US securities, so it is not a complete picture of a manager’s assets.