Platt Investment Counsel, LLC — 13F Holdings & Portfolio
CIK 1859195 · latest 13F-HR filed 2026-10-07
Platt Investment Counsel, LLC manages $145.3M in 13F-reported U.S. long-equity assets across 15 reported positions as of its 2026-09-30 13F-HR filing. Its largest disclosed positions are ESGV (29.66%), QQQ (15.24%), IJH (14.03%). Quarter over quarter (versus its 2026-06-30 filing) the fund opened 1 new position and exited 0; 5 existing positions rose in reported value and 7 fell.
AUM is the long-equity portion reported on Form 13F-HR. Excludes short positions, cash, foreign holdings, and non-13F assets. For informational purposes only — not investment advice.
Long-equity book
Distinct positions
Filed 2026-10-07
vs 2026-06-30
Portfolio charts
Latest quarter's book, what changed, and how the portfolio has evolved across filings.
Portfolio map
Q3 26Box size = position value; colour = change in share count vs the prior quarter (green added, red trimmed, blue new). Rows split across managers or share classes are combined. Click a box for the stock.
Sector mix
% of 13F valueSectors from each company's SIC code; funds and ETFs grouped separately.
Biggest buys and sells
Q2 26 → Q3 26Estimated from the change in shares held × the quarter-end price, so price moves alone don't count as buying. New and exited positions are included.
13F assets and positions
4 quartersTotal reported 13F value (bars) and number of positions (line) each quarter. Value changes include market moves.
Top positions over time
reported valueThe eight largest current positions, valued at each quarter end.
Concentration
top 10 = 99.1%Cumulative share of the portfolio held in the largest N positions.
As of the firm’s regulatory filing dated Mar 5, 2026.
| Name | Title / Status | Ownership | Type |
|---|---|---|---|
| PLATT, PETER, MARKERT Control | PRESIDENT & CHIEF COMPLIANCE OFFICER since Jul 2022 | 75% or more | Individual |
| THE MARY F. PLATT LIVING TRUST Control | OWNER TRUST since Jul 2022 | 25–50% | Domestic Entity |
| PLATT, PETER, MARKERT Control Indirect owner via THE MARY F. PLATT LIVING TRUST | TRUSTEE since Jul 2022 | 25–50% | Individual |
| Platt, David, R Control Indirect owner via THE MARY F. PLATT LIVING TRUST | TRUSTEE since Jul 2022 | 25–50% | Individual |
Ownership & leadership changes · 2 filings with changes since Feb 3, 2012
From the firm’s regulatory filings, newest first. Dates are filing dates: a filing that no longer lists someone does not say when they left.
- No longer listedPLATT, DOUGLAS, RUGH · MEMBER, TREASURER & CHIEF COMPLIANCE OFFICER · 75% or more · control person · listed since Mar 2017
- AddedPLATT, PETER, MARKERT · TRUSTEE · 25–50% · indirect via THE MARY F. PLATT LIVING TRUST · control person
- AddedPlatt, David, R · TRUSTEE · 25–50% · indirect via THE MARY F. PLATT LIVING TRUST · control person
- AddedTHE MARY F. PLATT LIVING TRUST · OWNER TRUST · 25–50% · control person
- ChangedPLATT, PETER, MARKERT · title PRESIDENT & SECRETARY → PRESIDENT & CHIEF COMPLIANCE OFFICER; ownership Less than 5% → 75% or more; now a control person
- AddedPLATT, PETER, MARKERT · PRESIDENT & SECRETARY · Less than 5%
- ChangedPLATT, DOUGLAS, RUGH · title PRESIDENT/OWNER/CHIEF COMPLIANCE OFFICER → TREASURER & CHIEF COMPLIANCE OFFICER
- ChangedPLATT, DOUGLAS, RUGH · title TREASURER & CHIEF COMPLIANCE OFFICER → MEMBER, TREASURER & CHIEF COMPLIANCE OFFICER
- ListedPLATT, DOUGLAS, RUGH · PRESIDENT/OWNER/CHIEF COMPLIANCE OFFICER · 75% or more · control person
Quarter-over-quarter changes
Changes in reported position value vs the prior 13F, so price moves count too, not just shares bought or sold.
Top Adds (vs prior quarter)
- VANGUARD INTL EQUITY INDEX F$4.4M +57.8%
- VANGUARD SCOTTSDALE FDS$2.0M +17.5%
- ISHARES TR$1.6M +16.2%
- APPLE INC$48.5K +15.1%
- BRISTOL-MYERS SQUIBB CO$40.7K +8.3%
Top Trims
- INVESCO QQQ TR-$4.8M -17.9%
- VANGUARD WORLD FD-$3.0M -6.6%
- ISHARES TR-$1.7M -7.6%
- VANGUARD BD INDEX FDS-$1.4M -11.9%
- VANGUARD BD INDEX FDS-$1.1M -9.6%
Platt Investment Counsel, LLC Holdings (2026-09-30)
Rows tagged Call or Put are options positions, not stock. Per SEC Form 13F-HR, Value shows the notional value of the underlying (shares covered × underlying price), not the option premium. Shares is the number of underlying shares covered (divide by 100 for contract count).
| # | Issuer | Symbol | CUSIP | Value | Weight | Shares | Type |
|---|---|---|---|---|---|---|---|
| 1 | VANGUARD WORLD FD | ESGV | 921910733 | $43.1M | 29.66% | 317,973 | SH |
| 2 | INVESCO QQQ TR | QQQ | 46090E103 | $22.1M | 15.24% | 29,938 | SH |
| 3 | ISHARES TR | IJH | 464287507 | $20.4M | 14.03% | 283,339 | SH |
| 4 | VANGUARD SCOTTSDALE FDS | VCSH | 92206C409 | $13.4M | 9.25% | 174,010 | SH |
| 5 | VANGUARD INTL EQUITY INDEX F | VEU | 922042775 | $12.1M | 8.31% | 145,591 | SH |
| 6 | ISHARES TR | IWM | 464287655 | $11.4M | 7.84% | 40,991 | SH |
| 7 | VANGUARD BD INDEX FDS | BND | 921937835 | $10.4M | 7.15% | 148,151 | SH |
| 8 | VANGUARD BD INDEX FDS | BLV | 921937793 | $10.0M | 6.89% | 159,642 | SH |
| 9 | BRISTOL-MYERS SQUIBB CO | BMY | 110122108 | $532.0K | 0.37% | 8,525 | SH |
| 10 | TESLA INC | TSLA | 88160R101 | $468.3K | 0.32% | 1,320 | SH |
| 11 | APPLE INC | AAPL | 037833100 | $370.0K | 0.25% | 1,111 | SH |
| 12 | VANGUARD INDEX FDS | VOO | 922908363 | $324.5K | 0.22% | 463 | SH |
| 13 | ALPHABET INC | GOOGL | 02079K305 | $319.3K | 0.22% | 928 | SH |
| 14 | ISHARES TR | ILCG | 464287119 | $293.2K | 0.20% | 2,507 | SH |
| 15 | INVENTIVA SA | IVA | 46124U107 | $45.2K | 0.03% | 12,260 | SH |
| Period | Filed | AUM | Holdings | Accession |
|---|---|---|---|---|
| 2026-09-30 | 2026-10-07 | $145.3M | 15 | 0002085853-26-001102 |
| 2026-06-30 | 2026-07-08 | $149.3M | 14 | 0002085853-26-000646 |
| 2026-03-31 | 2026-04-09 | $129.9M | 13 | 0002085853-26-000328 |
| 2025-12-31 | 2026-01-07 | $135.3M | 12 | 0002085853-26-000006 |
UNIT 202
CARY, NC 27519