Heffernan Advisory, Inc.
Heffernan Advisory, Inc. reported 57 US-listed holdings worth $148.9 million in its 13F for the quarter ended 30 September 2026, filed 13 October 2026. Its largest: Dimensional ETF Trust (31.3%), Arthur J. Gallagher & Co. (19.4%) and Dimensional ETF Trust (10.1%). Against the quarter before, it opened 17 positions, added to 30, trimmed 4 and sold out of 3.
The 14 largest of its 57 positions, each sized by its share of the reported holdings, coloured by the change in shares against Q2 2026.
What the fund reported holding at each quarter's end; hover a bar for the number of positions
What its reported holdings returned
Held through each quarter, the holdings it reported returned +0.1% over the 3 quarters to 30 September 2026, against +11.8% for the S&P 500.
Not the fund's own return: each 13F's holdings are kept unchanged until the next one, so trades inside a quarter, dividends, cash and fees are left out. A rough guide to how its picks have done over time.
What it did on the quarter
Its positions against its 13F for the quarter to 30 June 2026; a change under 0.1% of a position counts as held
Opened 17
- Arthur J. Gallagher & Co. AJG$28.8 million
- Advanced Micro Devices Inc. AMD$495,526
- Alphabet Inc. GOOGL$449,024
- Meta Platforms, Inc. META$401,025
- Amazon.com Inc. AMZN$342,830
- Xpo, Inc. XPO$337,882
- CrowdStrike Holdings, Inc. CRWD$333,585
- iShares S&P Growth Index FD IVW$320,085
and 9 more in the table below
Added to 30
- Dimensional ETF Trust DFAC+55,417 shares · +20%
- Dimensional ETF Trust DFIC+37,054 shares · +20%
- Dimensional ETF Trust DFSD+29,520 shares · +18%
- Dimensional ETF Trust DFGX+20,733 shares · +21%
- Dimensional ETF Trust DGCB+14,357 shares · +30%
- SPDR S&P 500 SPY+910 shares · +134%
- Seagate Technology Holdings plc STX+750 shares · +83%
- Dimensional ETF Trust DFEM+14,908 shares · +19%
and 22 more in the table below
Trimmed 4
- Legg Mason ETF Invt LVHD-1,603 shares · -2%
- VG Totl STK Vprs VTI-11 shares · -0%
- Alps ETF Trust AMLP-69 shares · -0%
- Etfis Ser Trust I UTES-45 shares · -0%
Sold out of 3
- Dimensional ETF Trust DCOR$12.4 million last quarter
- Maxlinear, Inc. MXL$256,060 last quarter
- Vivmark Residential VMRK$215,949 last quarter
What it holds
| Company | Shares | Value | Of its book | Change in shares |
|---|---|---|---|---|
| Dimensional ETF Trust DFCF | 1.2M | $46.6 million | 31.28% | +12.0K |
| Arthur J. Gallagher & Co. AJG | 126.4K | $28.8 million | 19.37% | new |
| Dimensional ETF Trust DFAC | 338.2K | $15.0 million | 10.10% | +55.4K |
| Dimensional ETF Trust DFSD | 191.3K | $8.9 million | 5.97% | +29.5K |
| Dimensional ETF Trust DFIC | 219.1K | $8.2 million | 5.54% | +37.1K |
| Dimensional ETF Trust DFGX | 117.8K | $6.0 million | 4.05% | +20.7K |
| Dimensional ETF Trust DFEM | 94.5K | $3.8 million | 2.52% | +14.9K |
| Legg Mason ETF Invt LVHD | 87.4K | $3.6 million | 2.43% | -1.6K |
| Dimensional ETF Trust DGCB | 62.4K | $3.2 million | 2.18% | +14.4K |
| Seagate Technology Holdings plc STX | 1.6K | $1.5 million | 1.02% | +750 |
| VG Totl STK Vprs VTI | 3.7K | $1.4 million | 0.92% | -11 |
| Etfis Ser Trust I UTES | 19.1K | $1.3 million | 0.90% | -45 |
| SPDR S&P 500 SPY | 1.6K | $1.2 million | 0.81% | +910 |
| Dimensional ETF Trust DFNM | 25.9K | $1.2 million | 0.80% | no change |
| Vanguard World FD VGT | 8.4K | $1.1 million | 0.71% | +4.4K |
| iShares Trust IBMO | 32.7K | $837,505 | 0.56% | no change |
| iShares Trust IBMP | 33.1K | $835,242 | 0.56% | no change |
| iShares Trust IBMQ | 33.1K | $833,341 | 0.56% | no change |
| Alps ETF Trust AMLP | 14.9K | $770,736 | 0.52% | -69 |
| Dimensional ETF Trust DFGR | 28.1K | $760,105 | 0.51% | +5.4K |
| iShares Russell 2000 ETF IWM | 2.7K | $759,195 | 0.51% | +1.8K |
| Mastercard Inc. MA | 1.3K | $702,573 | 0.47% | +180 |
| Marvell Technology, Inc. MRVL | 2.4K | $625,913 | 0.42% | +1.2K |
| Microsoft Corp. MSFT | 1.1K | $557,009 | 0.37% | +322 |
| Visa Inc. V | 1.5K | $523,903 | 0.35% | +417 |
| iShares Trust IWF | 4.0K | $501,040 | 0.34% | +2.0K |
| Advanced Micro Devices Inc. AMD | 810 | $495,526 | 0.33% | new |
| Palo Alto Networks Inc. PANW | 1.2K | $480,745 | 0.32% | +610 |
| Apple Inc. AAPL | 1.4K | $466,894 | 0.31% | +10 |
| Alphabet Inc. GOOGL | 1.3K | $449,024 | 0.30% | new |
| Meta Platforms, Inc. META | 553 | $401,025 | 0.27% | new |
| Ciena Corp. CIEN | 1.0K | $358,856 | 0.24% | +520 |
| Amazon.com Inc. AMZN | 1.4K | $342,830 | 0.23% | new |
| Flex Ltd. FLEX | 3.1K | $340,969 | 0.23% | +600 |
| Xpo, Inc. XPO | 1.9K | $337,882 | 0.23% | new |
| CrowdStrike Holdings, Inc. CRWD | 1.3K | $333,585 | 0.22% | new |
| Dycom Industries Inc. DY | 1.2K | $328,278 | 0.22% | +520 |
| iShares S&P Growth Index FD IVW | 2.2K | $320,085 | 0.22% | new |
| NVIDIA Corp. NVDA | 1.4K | $315,393 | 0.21% | new |
| Vanguard Value ETF VTV | 1.4K | $294,733 | 0.20% | new |
| Micron Technology Inc. MU | 275 | $292,905 | 0.20% | +75 |
| Dimensional ETF Trust DFAT | 4.0K | $268,510 | 0.18% | +12 |
| JPMorgan Chase & Co. JPM | 803 | $265,656 | 0.18% | new |
| Applied Materials Inc. AMAT | 510 | $260,804 | 0.18% | +30 |
| Technology Select Sector SPDR ETF XLK | 1.3K | $254,475 | 0.17% | new |
| Palantir Technologies Inc. PLTR | 1.4K | $254,388 | 0.17% | new |
| United Rentals, Inc. URI | 250 | $250,195 | 0.17% | +50 |
| Old Republic International Corp. ORI | 6.5K | $242,851 | 0.16% | no change |
| Zimmer Biomet Holdings, Inc. ZBH | 2.7K | $239,042 | 0.16% | new |
| SPDR S&P 500 Growth ETF SPYG | 1.9K | $233,852 | 0.16% | new |
| iShares Core S&P Small-Cap ETF IJR | 1.7K | $229,772 | 0.15% | new |
| Dimensional ETF Trust DFAU | 4.4K | $229,582 | 0.15% | +10 |
| Vanguard World FD MGV | 1.4K | $226,798 | 0.15% | +6 |
| Camden Property Trust CPT | 2.3K | $220,931 | 0.15% | +20 |
| ExxonMobil Holdings Corp. XOM | 1.3K | $213,528 | 0.14% | new |
| Alphabet Inc. GOOG | 615 | $209,555 | 0.14% | +41 |
| Global Net Lease, Inc. GNL | 12.9K | $106,521 | 0.07% | no change |