Columbia Asset Management’s Rio Tinto RIO Stock Holding History

Columbia Asset Management’s Portfolio RIO Stock Details RIO Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	$1.14M	Buy	12,245 +2,155	+21%	+$196K	0.22%	80
2025 Q4	$808K	Buy	10,090 +1,353	+15%	+$97.4K	0.14%	94
2025 Q3	$577K	Buy	8,737 +770	+10%	+$47.6K	0.11%	114
2025 Q2	$465K	Buy	7,967 +1,503	+23%	+$88.7K	0.09%	121
2025 Q1	$388K	Sell	6,464 -1,600	-20%	-$98.5K	0.08%	148
2024 Q4	$474K	Sell	8,064 -2,340	-22%	-$149K	0.09%	133
2024 Q3	$740K	Sell	10,404 -3,214	-24%	-$206K	0.13%	100
2024 Q2	$898K	Sell	13,618 -3,378	-20%	-$230K	0.17%	88
2024 Q1	$1.26M	Hold	16,996	–	–	0.26%	73
2023 Q4	$1.26M	Sell	16,996 -3,570	-17%	-$240K	0.26%	73
2023 Q3	$1.31M	Sell	20,566 -384	-2%	-$24.5K	0.29%	67
2023 Q2	$1.34M	Sell	20,950 -1,340	-6%	-$86.2K	0.28%	69
2023 Q1	$1.53M	Buy	22,290 +3,180	+17%	+$231K	0.34%	61
2022 Q4	$1.36M	Buy	19,110 +690	+4%	+$43.3K	0.33%	64
2022 Q3	$1.01M	Buy	18,420 +1,010	+6%	+$58.2K	0.27%	67
2022 Q2	$1.06M	Buy	+17,410	New	+$1.25M	0.27%	69
2021 Q4	$303K	Buy	4,525 +1,050	+30%	+$68K	0.06%	156
2021 Q3	$232K	Buy	+3,475	New	+$271K	0.05%	172

Other funds holding RIO

Fisher Asset Management Camas, Washington $295B AUM 31.6% 1-Year Est. Return

State Farm Mutual Automobile Insurance Bloomington, Illinois $127B AUM 32.55% 1-Year Est. Return

Goldman Sachs New York $871B AUM 31.28% 1-Year Est. Return

Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return

Mirae Asset Global ETFs Holdings Causeway Bay, Hong Kong $73.7B AUM 53.56% 1-Year Est. Return

Arrowstreet Capital Boston, Massachusetts $185B AUM 39.58% 1-Year Est. Return

Bank of America Charlotte, North Carolina $1.37T AUM 24.88% 1-Year Est. Return

Neuberger Berman Group New York $131B AUM 28.36% 1-Year Est. Return

Qube Research & Technologies (QRT) London, United Kingdom $89.9B AUM 20.22% 1-Year Est. Return

Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return

Columbia Asset Management's RIO Position: Q1 2026 in Review

Columbia Asset Management increased its Rio Tinto (RIO) stake by 21% in Q1 2026, buying an estimated $196K and bringing the position to 12,245 shares worth $1.14M. The position accounts for 0.22% of the portfolio, ranked #80.

Columbia Asset Management first reported a position in RIO in Q3 2021 and has held it in 18 quarters since. The position peaked at $1.53M in Q1 2023. 932 funds tracked by Wall St. Rank hold RIO as of Q1 2026.

Columbia Asset Management held 12,245 shares of Rio Tinto worth $1.14M as of Q1 2026.
Columbia Asset Management bought 2,155 Rio Tinto shares in Q1 2026, an estimated $196K.
Rio Tinto made up 0.22% of Columbia Asset Management's portfolio in Q1 2026, its #80 holding.
Columbia Asset Management first reported a position in Rio Tinto in Q3 2021 and has held it in 18 quarters since.
Columbia Asset Management's Rio Tinto position peaked at $1.53M in Q1 2023.
932 funds tracked by Wall St. Rank held Rio Tinto as of Q1 2026.

Based on Columbia Asset Management's 13F filing for Q1 2026, filed 21 Apr 2026.