Parallax Volatility Advisers’s Rio Tinto RIO Stock Holding History

Parallax Volatility Advisers’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	$78.2K	Sell	800 -25,300	-97%	-$2.31M	﹤0.01%	1253
2025 Q4	$2.09M	Buy	26,100 +25,100	+2,510%	+$1.81M	﹤0.01%	938
2025 Q3	$66K	Buy	+1,000	New	+$61.8K	﹤0.01%	1450
2025 Q1	–	Sell	-12,500	Closed	-$735K	–	2041
2024 Q4	$735K	Hold	12,500	–	–	﹤0.01%	1418
2024 Q3	$890K	Sell	12,500 -400	-3%	-$25.7K	﹤0.01%	1385
2024 Q2	$850K	Sell	12,900 -3,600	-22%	-$245K	﹤0.01%	1311
2024 Q1	$1.05M	Sell	16,500 -200	-1%	-$13.4K	﹤0.01%	1225
2023 Q4	$1.24M	Buy	16,700 +800	+5%	+$53.7K	﹤0.01%	1333
2023 Q3	$1.01M	Sell	15,900 -1,000	-6%	-$63.8K	﹤0.01%	1360
2023 Q2	$1.08M	Sell	16,900 -89,800	-84%	-$5.77M	﹤0.01%	1373
2023 Q1	$7.32M	Sell	106,700 -312,300	-75%	-$22.7M	0.02%	691
2022 Q4	$29.8M	Buy	419,000 +237,800	+131%	+$14.9M	0.05%	402
2022 Q3	$9.98M	Buy	181,200 +96,700	+114%	+$5.57M	0.02%	766
2022 Q2	$5.16M	Buy	84,500 +12,500	+17%	+$896K	﹤0.01%	964
2022 Q1	$5.79M	Sell	72,000 -27,100	-27%	-$2.06M	﹤0.01%	942
2021 Q4	$6.63M	Buy	99,100 +90,400	+1,039%	+$5.85M	0.01%	721
2021 Q3	$582K	Buy	8,700 +8,000	+1,143%	+$624K	﹤0.01%	1479
2021 Q2	$57K	Sell	700 -502,400	-100%	-$43.2M	﹤0.01%	1396
2021 Q1	$39.1M	Sell	503,100 -5,900	-1%	-$484K	0.09%	177
2020 Q4	$38.3M	Sell	509,000 -1,299,800	-72%	-$85.3M	0.04%	368
2020 Q3	$109M	Buy	1,808,800 +678,400	+60%	+$41.6M	0.08%	214
2020 Q2	$63.5M	Buy	1,130,400 +1,072,400	+1,849%	+$54.3M	0.07%	208
2020 Q1	$2.64M	Sell	58,000 -37,000	-39%	-$1.9M	﹤0.01%	1124
2019 Q4	$5.64M	Buy	95,000 +64,100	+207%	+$3.48M	0.01%	856
2019 Q3	$1.61M	Sell	30,900 -137,800	-82%	-$7.48M	﹤0.01%	1220
2019 Q2	$10.5M	Buy	168,700 +60,800	+56%	+$3.64M	0.01%	508
2019 Q1	$6.35M	Buy	+107,900	New	+$5.93M	0.01%	615
2018 Q4	–	Sell	-4,000	Closed	-$204K	–	3756
2018 Q3	$204K	Sell	4,000 -27,100	-87%	-$1.38M	﹤0.01%	1620
2018 Q2	$1.73M	Buy	+31,100	New	+$1.74M	﹤0.01%	955
2018 Q1	–	Sell	-616,500	Closed	-$32.6M	–	3864
2017 Q4	$32.6M	Sell	616,500 -650,000	-51%	-$31.7M	0.04%	189
2017 Q3	$59.8M	Buy	1,266,500 +1,032,500	+441%	+$48M	0.1%	115
2017 Q2	$9.9M	Buy	234,000 +171,500	+274%	+$6.88M	0.02%	398
2017 Q1	$2.54M	Sell	62,500 -386,500	-86%	-$16.4M	0.01%	787
2016 Q4	$17.3M	Sell	449,000 -42,800	-9%	-$1.57M	0.03%	309
2016 Q3	$16.4M	Sell	491,800 -268,900	-35%	-$8.57M	0.03%	316
2016 Q2	$23.8M	Buy	760,700 +63,900	+9%	+$1.91M	0.05%	250
2016 Q1	$19.7M	Buy	696,800 +67,900	+11%	+$1.81M	0.04%	246
2015 Q4	$18.3M	Buy	628,900 +253,000	+67%	+$8.55M	0.04%	305
2015 Q3	$12.7M	Buy	375,900 +165,900	+79%	+$6.21M	0.03%	355
2015 Q2	$8.65M	Sell	210,000 -183,300	-47%	-$8.05M	0.02%	528
2015 Q1	$16.3M	Sell	393,300 -542,800	-58%	-$24.5M	0.04%	352
2014 Q4	$43.1M	Buy	936,100 +906,600	+3,073%	+$42.7M	0.13%	160
2014 Q3	$1.45M	Buy	29,500 +29,300	+14,650%	+$1.62M	﹤0.01%	1273
2014 Q2	$11K	Hold	200	–	–	﹤0.01%	3717
2014 Q1	$11K	Sell	200 -200	-50%	-$10.9K	﹤0.01%	3031
2013 Q4	$22K	Hold	400	–	–	﹤0.01%	2656
2013 Q3	$20K	Sell	400 -700	-64%	-$32.6K	﹤0.01%	2282
2013 Q2	$44K	Buy	+1,100	New	+$49.1K	﹤0.01%	1666

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

Parallax Volatility Advisers's RIO Position: Q1 2026 in Review

Parallax Volatility Advisers opened a new position in Rio Tinto (RIO) in Q1 2026: 23,674 shares worth $2.31M. The stake represents 0.01% of the portfolio and ranks #754 among its holdings. This is a return to the name: Parallax Volatility Advisers previously reported a position in RIO as recently as Q3 2025.

Parallax Volatility Advisers first reported a position in RIO in Q3 2013 and has held it in 27 quarters since. The position peaked at $12.4M in Q4 2015. 935 funds tracked by Wall St. Rank hold RIO as of Q1 2026.

Parallax Volatility Advisers held 23,674 shares of Rio Tinto worth $2.31M as of Q1 2026.
Rio Tinto was a new Parallax Volatility Advisers position in Q1 2026.
Rio Tinto made up 0.01% of Parallax Volatility Advisers's portfolio in Q1 2026, its #754 holding.
Parallax Volatility Advisers first reported a position in Rio Tinto in Q3 2013 and has held it in 27 quarters since.
Parallax Volatility Advisers's Rio Tinto position peaked at $12.4M in Q4 2015.
935 funds tracked by Wall St. Rank held Rio Tinto as of Q1 2026.

Based on Parallax Volatility Advisers's 13F filing for Q1 2026, filed 15 May 2026.