Institutional Manager · CIK 0001945037
Coston, McIsaac & Partners
BAR HARBOR, ME · File #028-22656
Latest AUM
$430,786
Positions
1,071
Top-10 Concentration
44.8%
Filings
9
Portfolio Value Over Time
2024-03
2024-06
2024-09
2024-12
2025-03
2025-06
2025-09
2025-12
Biggest QoQ Changes
Ranked by conviction flow (share change × current price) so mark-to-market moves don't dominate. Price effect column shows how much of the $ change was just the stock moving.
| Action | Issuer | Ticker / CUSIP | Δ Shares | Flow ($) | Price Effect |
|---|---|---|---|---|---|
| ADD | VANGUARD DIVIDEND APPRECIATION ETF | 921908844 | +103,449 | +$22,736 | +$2 |
| ADD | SCHWAB US TREASURY MONEY INVESTOR | 808515548 | +17,077,687 | +$17,077 | +$1 |
| REDUCE | DFA GLOBAL EQUITY I | 25434D674 | -423,781 | -$16,774 | +$163 |
| ADD | VANGUARD FTSE ALL WORLD EX US ETF | 922042775 | +221,215 | +$16,272 | +$1 |
| REDUCE | BERKSHIRE HATHAWAY CLASS CLASS B | BRK-A | -29,745 | -$14,872 | -$82 |
| REDUCE | APPLE INC | AAPL | -50,894 | -$13,840 | +$895 |
| REDUCE | VANGUARD ULTRA SHORT TREASURY ETF | 922040852 | -170,041 | -$12,825 | -$40 |
| ADD | WILLIAMS SONOMA INC | WSM | +49,558 | +$8,850 | -$4 |
| ADD | DIMENSIONAL US EQUITY MARKET ETF | 25434V401 | +117,445 | +$8,711 | +$4 |
| REDUCE | PHILIP MORRIS INTL INC | 718172109 | -41,924 | -$6,684 | -$117 |
Sector Allocation
Filing History
- 13F HOLDINGS REPORTQ/E Dec 20251,071 pos · $430,786
- 13F HOLDINGS REPORTQ/E Sep 20251,039 pos · $419,982
- 13F HOLDINGS REPORTQ/E Jun 20251,001 pos · $386.4M
- 13F HOLDINGS REPORTQ/E Mar 2025886 pos · $343.1M
- 13F HOLDINGS REPORTQ/E Dec 2024989 pos · $337.8M
- 13F HOLDINGS REPORTQ/E Sep 2024933 pos · $354.8M
- 13F HOLDINGS REPORTQ/E Jun 2024926 pos · $317.7M
- 13F HOLDINGS REPORTQ/E Mar 2024905 pos · $311.7M
- 13F HOLDINGS REPORTQ/E Dec 2023901 pos · $263,651
Top 20 Holdings — Dec 2025
| # | Issuer | Ticker | Shares | Value | % of Portfolio |
|---|---|---|---|---|---|
| 1 | VANGUARD DIVIDEND APPRECIATION ETF | 921908844 | 103,983 | $22,853 | 6.64% |
| 2 | SCHWAB US TREASURY MONEY INVESTOR | 808515548 | 17,760,328 | $17,760 | 5.16% |
| 3 | DFA GLOBAL EQUITY I | 25434D674 | 436,434 | $17,304 | 5.03% |
| 4 | VANGUARD FTSE ALL WORLD EX US ETF | 922042775 | 221,322 | $16,280 | 4.73% |
| 5 | VANGUARD TOTAL STOCK MARKET ETF | 922908769 | 47,098 | $15,790 | 4.59% |
| 6 | VANGUARD ULTRA SHORT TREASURY ETF | 922040852 | 204,286 | $15,416 | 4.48% |
| 7 | BERKSHIRE HATHAWAY CLASS CLASS B | BRK-A | 30,466 | $15,314 | 4.45% |
| 8 | APPLE INC | AAPL | 50,366 | $13,692 | 3.98% |
| 9 | WALMART INC | WMT | 94,004 | $10,473 | 3.04% |
| 10 | PROSHARES S&P 500 DIV ARISTOCRAT ETF | 74348A467 | 89,385 | $9,302 | 2.70% |
| 11 | WILLIAMS SONOMA INC | WSM | 49,793 | $8,892 | 2.58% |
| 12 | DIMENSIONAL US EQUITY MARKET ETF | 25434V401 | 119,446 | $8,859 | 2.57% |
| 13 | JOHNSON & JOHNSON | JNJ | 38,371 | $7,941 | 2.31% |
| 14 | DIMENSIONAL CORE FIXED INCOME ETF | 25434V872 | 178,278 | $7,587 | 2.20% |
| 15 | MCDONALDS CORP | MCD | 23,019 | $7,035 | 2.04% |
| 16 | THE COCA-COLA CO | KO | 98,910 | $6,914 | 2.01% |
| 17 | PHILIP MORRIS INTL INC | 718172109 | 42,827 | $6,869 | 2.00% |
| 18 | SCHWAB US TREASURY MONEY ULTRA | 808515472 | 6,792,317 | $6,792 | 1.97% |
| 19 | SOUTHERN CO | SOMN | 74,143 | $6,465 | 1.88% |
| 20 | NEXTERA ENERGY INC | NEE-PW | 77,859 | $6,250 | 1.82% |