CIK: 0000769954
Total reported value
$91.3M
Reporting period: 2026-03-31 · Number of holdings: 23
ACCOUNT MANAGEMENT LLC disclosed 23 holdings in its latest 13F filing for the period ending 2026-03-31, with total reported value of $91.3M and a quarterly turnover rate of 16.2%.
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Account Management LLC's disclosed holdings carry a Herfindahl concentration index of 0.109 — mathematically equivalent to about 9 equally-sized positions, well below its 23 actual disclosed holdings. That gap points to a strategy built around a small core of high-conviction bets rather than broad diversification.
Position sizes vary widely across the portfolio (a coefficient of variation of 1.25), with a handful of outsized bets alongside many smaller positions.
No strong tilt toward either adding to existing winners or initiating outsized new positions was observed in the latest reported quarter.
Trim BX
-0.7% -$2.7M
Add ASML
-4.4% $1.7M
Trim TMUS
-58.9% -$1.9M
Add EPD
0.0% $1.5M
Add NEE
0.0% $1.1M
Trim BRK-B
-0.9% -$1.3M
| # | Ticker | Issuer | Asset Subclass | Weight | Weight Change | Shares Change | 4Q Trend |
|---|---|---|---|---|---|---|---|
| 1 | BRK-B | Berkshire Hathaway Inc-cl B | Stock-Other | 23.79% | -0.87% | -0.88% | |
| 2 | ASML | ASML Holding N.V. | Stock-Tech | 12.01% | +2.05% | -4.38% | |
| 3 | EPD | Enterprise Products Partners | Stock-Energy | 10.66% | +1.81% | — | |
| 4 | NEE | Nextera Energy INC | Stock-Utilities | 8.75% | +1.35% | — | |
| 5 | BX | Blackstone INC | Stock-Financials | 8.48% | -2.73% | -0.74% | |
| 6 | ORLY | O'reilly Automotive INC | Stock-Consumer Disc | 5.83% | +0.13% | -0.94% | |
| 7 | JPM | Jpmorgan Chase & Co | Stock-Financials | 4.36% | -0.31% | — | |
| 8 | SNPS | Synopsys INC | Stock-Tech | 3.94% | -0.51% | +2.83% | |
| 9 | FTNT | Fortinet INC | Stock-Tech | 2.97% | +0.02% | -3.91% | |
| 10 | GLD | Spdr Gold Shares | ETF-Commodities | 2.84% | +0.28% | — | |
| 11 | AMZN | Amazon.com INC | Stock-Consumer Disc | 2.52% | +0.13% | +14.38% | |
| 12 | ISRG | Intuitive Surgical INC | Stock-Healthcare | 2.46% | -0.50% | — | |
| 13 | NTNX | Nutanix INC - A | Stock-Tech | 1.87% | +1.87% | NEW | |
| 14 | MSFT | Microsoft CORP | Stock-Tech | 1.86% | -0.52% | — | |
| 15 | AMT | American Tower CORP | Stock-Real Estate | 1.67% | — | — | |
| 16 | TMUS | T-mobile US INC | Stock-Comm Services | 1.52% | -1.98% | -58.87% | |
| 17 | ADI | Analog Devices INC | Stock-Tech | 1.20% | +0.20% | — | |
| 18 | INTU | Intuit INC | Stock-Tech | 0.83% | -0.41% | — | |
| 19 | AEM | Agnico Eagle Mines LTD | Stock-Materials | 0.68% | +0.13% | — | |
| 20 | BA | Boeing Co/the | Stock-Industrials | 0.60% | -0.04% | — | |
| 21 | GOOG | Alphabet Inc-cl C | Stock-Comm Services | 0.53% | -0.04% | — | |
| 22 | GOOGL | Alphabet Inc-cl A | Stock-Comm Services | 0.32% | -0.02% | — | |
| 23 | PJT | Pjt Partners INC - A | Stock-Financials | 0.30% | -0.05% | — |
Performance for Q3 2026
+3.6%
Performance Last 4 Quarters
+16.5%
Based on 68% of reported portfolio value with available pricing
| Period | Holdings | Total value | Stability | Top holdings |
|---|---|---|---|---|
| 2026-03-31 | 23 | $91.3M | 16 | |
| 2025-12-31 | 22 | $93.2M | 14 | |
| 2025-09-30 | 23 | $93.8M | 18 | |
| 2025-06-30 | 25 | $91.1M | 0 | |
| 2025-03-31 | 24 | $90.8M | 100 | |
| 2024-12-31 | 24 | $85.4M | 0 | |
| 2024-09-30 | 24 | $84.1M | 0 | |
| 2024-06-30 | 24 | $88.2M | 0 | |
| 2024-03-31 | 24 | $92.6M | 0 | |
| 2023-12-31 | 24 | $83.6M | 0 | |
| 2023-09-30 | 23 | $72.3M | 0 | |
| 2023-06-30 | 22 | $74.6M | 0 | |
| 2023-03-31 | 23 | $78.2M | 0 | |
| 2022-12-31 | 21 | $69.9M | 0 | |
| 2022-09-30 | 23 | $73.7M | 0 | |
| 2022-06-30 | 25 | $82.1M | 0 | |
| 2022-03-31 | 24 | $102.2M | 0 | |
| 2021-12-31 | 26 | $115.8M | 0 | |
| 2020-09-30 | 25 | $65.4M | 15 | |
| 2020-06-30 | 24 | $60.6M | 36 | |
| 2020-03-31 | 22 | $74.3M | 41 | |
| 2019-12-31 | 22 | $90.7M | 9 | |
| 2019-09-30 | 23 | $87.6M | 28 | |
| 2019-06-30 | 23 | $116.1M | 9 | |
| 2019-03-31 | 22 | $110.5M | 15 | |
| 2018-12-31 | 22 | $101.7M | 29 | |
| 2018-09-30 | 26 | $130.0M | 14 | |
| 2018-06-30 | 25 | $118.1M | 15 | |
| 2018-03-31 | 22 | $110.2M | 13 | |
| 2017-12-31 | 24 | $115.3M | 9 | |
| 2017-09-30 | 23 | $108.0M | 16 | |
| 2017-06-30 | 21 | $98.0M | 13 | |
| 2017-03-31 | 21 | $95.3M | 15 | |
| 2016-12-31 | 20 | $85.2M | 22 | |
| 2016-09-30 | 21 | $73.2M | 11 | |
| 2016-06-30 | 23 | $77.3M | 25 | |
| 2016-03-31 | 24 | $88.0M | 14 | |
| 2015-12-31 | 25 | $88.2M | 28 | |
| 2015-09-30 | 31 | $104.6M | 31 | |
| 2015-06-30 | 31 | $125.0M | 12 | |
| 2015-03-31 | 30 | $117.5M | 21 | |
| 2014-12-31 | 29 | $106.8M | 24 | |
| 2014-09-30 | 29 | $111.1M | 32 | |
| 2014-06-30 | 28 | $103.1M | 34 | |
| 2014-03-31 | 33 | $111.8M | 24 | |
| 2013-12-31 | 33 | $112.2M | 23 | |
| 2013-09-30 | 36 | $121.1M | 38 | |
| 2013-06-30 | 34 | $95.5M | — |
Account Management LLC's most significant position changes for 2026-03-31: New buy: Nutanix INC - A (NTNX); Trim: Blackstone INC (BX) — shares -0.74%; Trim: ASML Holding N.V. (ASML) — shares -4.38%; Trim: T-mobile US INC (TMUS) — shares -58.87%; Trim: Berkshire Hathaway Inc-cl B (BRK-B) — shares -0.88%.
| # | Ticker | Issuer | Weight Change | Shares Change | Action |
|---|---|---|---|---|---|
| 1 | ASML | ASML Holding N.V. | +2.1% | -4.38% | Trim |
| 2 | EPD | Enterprise Products Partners | +1.8% | — | Unchanged |
| 3 | NEE | Nextera Energy INC | +1.4% | — | Unchanged |
| 4 | GLD | Spdr Gold Shares | +0.3% | — | Unchanged |
| 5 | ADI | Analog Devices INC | +0.2% | — | Unchanged |
| 6 | AEM | Agnico Eagle Mines LTD | +0.1% | — | Unchanged |
| 7 | AMZN | Amazon.com INC | +0.1% | +14.38% | Add |
| 8 | ORLY | O'reilly Automotive INC | +0.1% | -0.94% | Trim |
| 9 | FTNT | Fortinet INC | 0% | -3.91% | Trim |
| 10 | AMT | American Tower CORP | — | — | Unchanged |
| 11 | GOOGL | Alphabet Inc-cl A | 0% | — | Unchanged |
| 12 | BA | Boeing Co/the | 0% | — | Unchanged |
| 13 | GOOG | Alphabet Inc-cl C | 0% | — | Unchanged |
| 14 | PJT | Pjt Partners INC - A | -0.1% | — | Unchanged |
| 15 | JPM | Jpmorgan Chase & Co | -0.3% | — | Unchanged |
| 16 | INTU | Intuit INC | -0.4% | — | Unchanged |
| 17 | ISRG | Intuitive Surgical INC | -0.5% | — | Unchanged |
| 18 | SNPS | Synopsys INC | -0.5% | +2.83% | Add |
| 19 | MSFT | Microsoft CORP | -0.5% | — | Unchanged |
| 20 | BRK-B | Berkshire Hathaway Inc-cl B | -0.9% | -0.88% | Trim |
| 21 | TMUS | T-mobile US INC | -2% | -58.87% | Trim |
| 22 | BX | Blackstone INC | -2.7% | -0.74% | Trim |
| 23 | NTNX | Nutanix INC - A | — | NEW | New buy |
| Period | Filed | Type | EDGAR |
|---|---|---|---|
| 2026-03-31 | 2026-05-01 | 13F-HR | View on EDGAR |
| 2025-12-31 | 2026-02-02 | 13F-HR | View on EDGAR |
| 2025-09-30 | 2025-11-07 | 13F-HR | View on EDGAR |
| 2025-06-30 | 2025-07-23 | 13F-HR | View on EDGAR |
| 2025-03-31 | 2025-04-30 | 13F-HR | View on EDGAR |
| 2024-12-31 | 2025-02-12 | 13F-HR | View on EDGAR |
| 2024-09-30 | 2024-11-04 | 13F-HR | View on EDGAR |
| 2024-06-30 | 2024-08-05 | 13F-HR | View on EDGAR |
| 2024-03-31 | 2024-04-30 | 13F-HR | View on EDGAR |
| 2023-12-31 | 2024-02-02 | 13F-HR | View on EDGAR |
| 2023-09-30 | 2023-11-07 | 13F-HR | View on EDGAR |
| 2023-06-30 | 2023-07-31 | 13F-HR | View on EDGAR |
| 2023-03-31 | 2023-05-04 | 13F-HR | View on EDGAR |
| 2022-12-31 | 2023-01-30 | 13F-HR | View on EDGAR |
| 2022-09-30 | 2022-11-02 | 13F-HR | View on EDGAR |
| 2022-06-30 | 2022-08-03 | 13F-HR | View on EDGAR |
| 2022-03-31 | 2022-05-02 | 13F-HR | View on EDGAR |
| 2021-12-31 | 2022-01-31 | 13F-HR | View on EDGAR |
| 2020-09-30 | 2020-10-28 | 13F-HR | View on EDGAR |
| 2020-06-30 | 2020-08-04 | 13F-HR | View on EDGAR |
| 2020-03-31 | 2020-04-16 | 13F-HR | View on EDGAR |
| 2019-12-31 | 2020-02-05 | 13F-HR | View on EDGAR |
| 2019-09-30 | 2019-10-23 | 13F-HR | View on EDGAR |
| 2019-06-30 | 2019-08-08 | 13F-HR | View on EDGAR |
| 2019-03-31 | 2019-04-23 | 13F-HR | View on EDGAR |
| 2018-12-31 | 2019-01-23 | 13F-HR | View on EDGAR |
| 2018-09-30 | 2018-10-24 | 13F-HR | View on EDGAR |
| 2018-06-30 | 2018-07-10 | 13F-HR | View on EDGAR |
| 2018-03-31 | 2018-05-09 | 13F-HR | View on EDGAR |
| 2017-12-31 | 2018-02-09 | 13F-HR | View on EDGAR |
| 2017-09-30 | 2017-11-08 | 13F-HR | View on EDGAR |
| 2017-06-30 | 2017-08-10 | 13F-HR | View on EDGAR |
| 2017-03-31 | 2017-05-11 | 13F-HR | View on EDGAR |
| 2016-12-31 | 2017-02-10 | 13F-HR | View on EDGAR |
| 2016-09-30 | 2016-11-04 | 13F-HR | View on EDGAR |
| 2016-06-30 | 2016-08-05 | 13F-HR | View on EDGAR |
| 2016-03-31 | 2016-05-06 | 13F-HR | View on EDGAR |
| 2015-12-31 | 2016-02-09 | 13F-HR | View on EDGAR |
| 2015-09-30 | 2015-11-13 | 13F-HR | View on EDGAR |
| 2015-06-30 | 2015-08-10 | 13F-HR | View on EDGAR |
| 2015-03-31 | 2015-05-13 | 13F-HR | View on EDGAR |
| 2014-12-31 | 2015-02-12 | 13F-HR | View on EDGAR |
| 2014-09-30 | 2014-11-13 | 13F-HR | View on EDGAR |
| 2014-06-30 | 2014-08-11 | 13F-HR | View on EDGAR |
| 2014-03-31 | 2014-05-02 | 13F-HR | View on EDGAR |
| 2013-12-31 | 2014-02-13 | 13F-HR | View on EDGAR |
| 2013-09-30 | 2013-11-01 | 13F-HR | View on EDGAR |
| 2013-06-30 | 2013-08-14 | 13F-HR | View on EDGAR |
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