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Birch Hill Investment Advisors LLC

Registered adviser
Location
Boston, MA
Portfolio Value
Mid $2,327,477,702
Diversification
Diversified
Filing Date
Global Rank
#1,320 / 8,811 ▼ 49 · as of Jun 2026
Top Industry
Internet Content & Information 7.4%
Period ended 21 days ago
Filed Oct 16, 2026 · 5d
27 quarters · since Mar 2020

Regulatory profile

From Form ADV, the SEC filer profile, 13D/13G type codes and N-CEN, never from the name.

Holder type
Registered adviser
Form ADV roster, Oct 1, 2026
Form ADV adviser
CRD 143750
Roster of Oct 1, 2026
Regulatory AUM
$2,947,308,859
Main clients
Individuals and high net worth (91% of AUM)
Form ADV history
Monthly rosters from Dec 2019; each row is a run with the same figures, newest first.
Rosters Regulatory AUM Main clients
Mar 2026 to Oct 2026 $2,947,308,859 Individuals and high net worth (91%)
Mar 2025 to Feb 2026 $2,654,299,125 Individuals and high net worth (91%)
Mar 2024 to Feb 2025 $2,389,324,863 Individuals and high net worth (91%)
May 2023 to Feb 2024 $2,064,583,618 Individuals and high net worth (90%)
Apr 2023 $2,064,583,618 Individuals and high net worth (90%)
Apr 2022 to Mar 2023 $2,511,069,033 Individuals and high net worth (91%)
3 earlier changes not shown.

Portfolio style

Measured from the filed 13F common-share book for Jun 30, 2026, the newest measured quarter, never from the firm's own description.

Style
Diversified active
Top 10 weight 47.5%, 28.7 effective positions, active share 65.8% against the S&P 500 as of 2026-06-30; it meets none of the index-like, systematic-like or concentrated tests
Turnover
Low turnover
8.5% over the last four quarters (under 30%)
Horizon
Long horizon
Value-weighted holding period 22.9 quarters (12+), a floor since 74.1% of the book was already held when coverage starts

Closest benchmark: the S&P 500 as of 2026-06-30, active share 65.8%; sector active share 10.5% against the combined 13F book's sector weights.

Over time 26 measured quarters

How the bands are measured

Style bands measure the filed 13F common-share book each closed quarter, tested in this order. Unknown: under $10,000,000 of valued equity or 5 stocks. Index-like (100+ stocks): active share of 20% or less against the closest benchmark, which is the S&P 500, S&P MidCap 400, S&P SmallCap 600, Russell 1000, Russell 2000, Nasdaq-100 or Dow Jones Industrial Average (weighted by an index-tracking fund's reported holdings or the index's constituents nearest the quarter end, over the names resolved to companies, and only when those are 90%+ of its weight) or every 13F filer's combined book, or index series holding 80%+ of the registered fund assets it advises (N-CEN) and equal to 50%+ of its book. Systematic-like: 500+ stocks, 100%+ annual turnover and a top 10 weight of 25% or less. Concentrated: a top 10 weight of 60%+ or 12 or fewer effective positions. Diversified active: none of these. Turnover is the smaller of buys and sells over average equity value, summed over four quarters: low under 30%, high 100%+. Horizon is the value-weighted number of quarters each position has been held: short under 4, long 12+.

Clone Performance

Build a hypothetical price-return history from this filer's public 13F holdings.

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Portfolio Concentration

219 tracked positions · as of Sep 30, 2026 · Δ vs Jun 30, 2026
Top Position
7.0%
−2.8 pts
Top 5
29.1%
−0.6 pts
Top 10
47.1%
−0.4 pts
HHI
322
Dec 2023 → Sep 2026 · range 304 – 348
Diversified−26

Portfolio Trend

27 quarters · across all stocks

Sector Breakdown

As of Sep 30, 2026
Sector % Portfolio Value
Technology 28.5% $662,779,112
Industrials 13.1% $305,526,067
Healthcare 12.7% $296,724,197
Financial Services 12.6% $292,849,597
Consumer Cyclical 9.9% $230,974,851
Communication Services 7.2% $168,062,147
Consumer Defensive 6.5% $151,957,740
Unclassified 3.8% $87,914,031
Basic Materials 3.7% $85,337,298
Utilities 1.1% $24,738,483
Energy 0.6% $13,623,310
Real Estate 0.3% $6,990,869

Last Quarter's Activity

Export CSV
Sep 30, 2026 vs Jun 30, 2026

Added To

Positions the filer increased
25 positions
Ticker Δ Shares Shares Value Open

Trimmed

Positions the filer reduced
25 positions
Ticker Δ Shares Shares Value Open

New Positions

Positions the filer opened this quarter
12 positions
Ticker Shares Value Open

Sold Out

Positions the filer fully exited
4 positions
Ticker Shares Value Open

Portfolio Positions

Export CSV View 13F filing
219 tracked positions · $2,327,477,702 total · filing declares 219 positions · $2,430,286,951 · as of Sep 30, 2026
Showing 1–50 of 219 positions by value · page 1 of 5
Ticker Company Shares Value (USD) % of Portfolio History

Showing the top 50 of 219 positions. Create a free account to see every position, past quarters, search, filters and CSV export.

Covers the securities this platform tracks: U.S.-listed common stock and the put/call positions reported on it. A 13F can also report security types outside that coverage — preferred shares, bonds, warrants, untracked share classes — so the filing's own declared total can exceed the figures above. The source filing is linked at the top of this table.