Parallax Volatility Advisers
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Parallax Volatility Advisers’s Rambus RMBS Stock Holding History

Parallax Volatility Advisers’s Portfolio RMBS Stock Details RMBS Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$982K Buy
+7,400
New +$962K ﹤0.01% 963
2022
Q1 		– Sell
-595,500
Closed -$17.5M – 3312
2021
Q4 		$17.5M Hold
595,500
– – 0.02% 657
2021
Q3 		$13.2M Buy
595,500
+10,000
+2% +$235K 0.01% 821
2021
Q2 		$13.9M Hold
585,500
– – 0.01% 769
2021
Q1 		$11.4M Hold
585,500
– – 0.01% 877
2020
Q4 		$10.2M Hold
585,500
– – 0.01% 1066
2020
Q3 		$8.02M Buy
585,500
+410,500
+235% +$5.83M 0.01% 1102
2020
Q2 		$2.66M Buy
+175,000
New +$2.46M ﹤0.01% 1352
2017
Q2 		– Sell
-8,000
Closed -$105K – 3635
2017
Q1 		$105K Buy
8,000
+7,000
+700% +$92K ﹤0.01% 2247
2016
Q4 		$14K Sell
1,000
-3,500
-78% -$45.3K ﹤0.01% 2737
2016
Q3 		$56K Buy
4,500
+2,500
+125% +$33K ﹤0.01% 2342
2016
Q2 		$24K Sell
2,000
-27,400
-93% -$334K ﹤0.01% 2297
2016
Q1 		$405K Buy
29,400
+17,000
+137% +$211K ﹤0.01% 1522
2015
Q4 		$143K Buy
+12,400
New +$143K ﹤0.01% 2006
2015
Q1 		– Sell
-2,800
Closed -$31K – 5306
2014
Q4 		$31K Sell
2,800
-11,300
-80% -$128K ﹤0.01% 4234
2014
Q3 		$176K Buy
14,100
+8,700
+161% +$110K ﹤0.01% 2552
2014
Q2 		$78K Sell
5,400
-1,900
-26% -$23.5K ﹤0.01% 2661
2014
Q1 		$79K Buy
7,300
+6,100
+508% +$57.2K ﹤0.01% 2019
2013
Q4 		$11K Sell
1,200
-300
-20% -$2.7K ﹤0.01% 2932
2013
Q3 		$14K Buy
1,500
+200
+15% +$1.83K ﹤0.01% 2459
2013
Q2 		$11K Buy
+1,300
New +$9.69K ﹤0.01% 2211

Other funds holding RMBS

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
T. Rowe Price Associates
T. Rowe Price Associates Baltimore, Maryland $999B AUM 46.22% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
JP Morgan Chase
JP Morgan Chase New York $1.81T AUM 41.13% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return

Parallax Volatility Advisers's RMBS Position: Q2 2026 in Review

Parallax Volatility Advisers opened a new position in Rambus (RMBS) in Q2 2026: 4,573 shares worth $607K. The stake represents ﹤0.01% of the portfolio and ranks #1077 among its holdings. This is a return to the name: Parallax Volatility Advisers previously reported a position in RMBS as recently as Q4 2023.

Parallax Volatility Advisers first reported a position in RMBS in Q1 2014 and has held it in 21 quarters since. The position peaked at $610K in Q2 2020. 618 funds tracked by Wall St. Rank hold RMBS as of Q2 2026.

  • Parallax Volatility Advisers held 4,573 shares of Rambus worth $607K as of Q2 2026.
  • Rambus was a new Parallax Volatility Advisers position in Q2 2026.
  • Rambus made up ﹤0.01% of Parallax Volatility Advisers's portfolio in Q2 2026, its #1077 holding.
  • Parallax Volatility Advisers first reported a position in Rambus in Q1 2014 and has held it in 21 quarters since.
  • Parallax Volatility Advisers's Rambus position peaked at $610K in Q2 2020.
  • 618 funds tracked by Wall St. Rank held Rambus as of Q2 2026.

Based on Parallax Volatility Advisers's 13F filing for Q2 2026, filed 14 Aug 2026.