Portfolio 21 Investments

RIA/Wealth

Portfolio 21 Investments is a RIA/Wealth based in Lake Oswego, OR led by Amanda Summer Manning Plyley, reporting $700.3M in AUM as of Q3 2025 with 47% Technology concentration, 59% concentrated in top 10 holdings, and 47% technology allocation.

DirectorAmanda Summer Manning Plyley

Portfolio Value: $411.6M
Positions: 55
Top Holding: MSFT at 10.24%
Last Reported: Q3 2025

Address310 N. State Street, Suite 214, Lake Oswego, OR, 97034, United States

Top Holdings

Largest long holdings in Portfolio 21 Investments's portfolio (59.1% of total portfolio)

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GthenH

Holding	Sector	Position	Weight	Traded	Ownership	Owned Since
1 Microsoft MSFT	Software - Infrastructure Technology	$42.1M	10.24%	-$532.5K Sold	0.00% 81.3K shares	Q2 2015 Held for 10y 5m
2 Nvidia NVDA	Semiconductors Technology	$38.7M	9.41%	-$511.2K Sold	0.00% 207.6K shares	Q1 2023 Held for 2y 8m
3 Apple AAPL	Consumer Electronics Technology	$38.3M	9.30%	-$340.7K Sold	0.00% 150.3K shares	≤ Q2 2013 Held for 12y 5m+
4 Alphabet Inc. GOOG	Internet Content & Information Communication Services	$26.2M	6.37%	-$217.2K Sold	0.00% 107.6K shares	Q2 2014 Held for 11y 5m
5 Amazon AMZN	Specialty Retail Consumer Cyclical	$24.4M	5.93%	-$306.7K Sold	0.00% 111.1K shares	Q1 2016 Held for 9y 8m
6 Costco Wholesale COST	Discount Stores Consumer Defensive	$16.2M	3.93%	-$143.5K Sold	0.00% 17.5K shares	Q1 2015 Held for 10y 8m
7 Moody's MCO	Financial - Data & Stock Exchanges Financial Services	$16.1M	3.92%	-$134.8K Sold	0.02% 33.9K shares	Q1 2017 Held for 8y 8m
8 Visa V	Financial - Credit Services Financial Services	$14.5M	3.52%	-$118.5K Sold	0.00% 42.4K shares	Q2 2014 Held for 11y 5m
9 Broadcom Inc. AVGO	Semiconductors Technology	$13.4M	3.26%	+$13.4M New	0.00% 40.7K shares	Q3 2025 Held for 2 months
10 S&P Global SPGI	Financial - Data & Stock Exchanges Financial Services	$13.3M	3.24%	-$117.3K Sold	0.01% 27.4K shares	Q2 2015 Held for 10y 5m

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GthenH

Changes

Portfolio activity, position movements, and quarter-over-quarter changes in Portfolio 21 Investments's latest filing

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Market Value

$411.6M

Prior: $392.5M

Q/Q Change

+4.85%

+$19.1M

Net Flows % of MV

-0.894%

Turnover Ratio

7.02%

New Purchases

3 stocks

$27.0M

Added To

1 stocks

+$32.0K

Sold Out Of

4 stocks

$22.8M

Reduced Holdings

32 stocks

-$8.0M

Increased Positions

Position	Shares Δ	Change
1 Broadcom Inc. AVGO	New	0 → 40.7K +$13.4M
2 Amphenol APH	New	0 → 70.5K +$8.7M
3 Oracle ORCL	New	0 → 17.4K +$4.9M
4 Invesco Taxable Municipal Bond BAB	+8.5%	13.8K → 15.0K +$32.0K

Decreased Positions

Position	Shares Δ	Change
1 Gartner IT	Sold	28.8K → 0 −$11.6M
2 Adobe ADBE	Sold	10.6K → 0 −$4.1M
3 Salesforce CRM	Sold	14.7K → 0 −$4.0M
4 Aon plc AON	Sold	8.5K → 0 −$3.0M
5 Booking Holdings Inc. BKNG	-33.82%	2.2K → 1.5K −$4.0M