Citadel Advisors’s Monarch ProCap Index ETF MPRO Stock Holding History

Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake
Trade Value Portfolio Weight Portfolio Position
2026
Q2
$449K Buy
+13,748
New +$444K ﹤0.01% 10135
2025
Q4
Sell
-16,089
Closed -$491K 13565
2025
Q3
$491K Sell
16,089
-7,050
-30% -$212K ﹤0.01% 9185
2025
Q2
$689K Buy
23,139
+7,643
+49% +$221K ﹤0.01% 7877
2025
Q1
$448K Buy
15,496
+5,209
+51% +$151K ﹤0.01% 8725
2024
Q4
$294K Buy
+10,287
New +$304K ﹤0.01% 9691
2023
Q3
Sell
-10,512
Closed -$272K 14799
2023
Q2
$272K Buy
+10,512
New +$269K ﹤0.01% 9252
2023
Q1
Sell
-19,933
Closed -$491K 15191
2022
Q4
$491K Buy
19,933
+10,974
+122% +$270K ﹤0.01% 8280
2022
Q3
$213K Buy
8,959
+186
+2% +$4.76K ﹤0.01% 10291
2022
Q2
$222K Sell
8,773
-1,005
-10% -$26.3K ﹤0.01% 10478
2022
Q1
$268K Buy
+9,778
New +$264K ﹤0.01% 10840
2021
Q2
Sell
-21,452
Closed -$541K 14113
2021
Q1
$541K Buy
+21,452
New +$538K ﹤0.01% 9506

Other funds holding MPRO

Citadel Advisors's MPRO Position: Q2 2026 in Review

Citadel Advisors opened a new position in Monarch ProCap Index ETF (MPRO) in Q2 2026: 13,748 shares worth $449K. The stake represents ﹤0.01% of the portfolio and ranks #10135 among its holdings. This is a return to the name: Citadel Advisors previously reported a position in MPRO as recently as Q3 2025.

Citadel Advisors first reported a position in MPRO in Q1 2021 and has held it in 11 quarters since. The position peaked at $689K in Q2 2025. 11 funds tracked by Wall St. Rank hold MPRO as of Q2 2026.

  • Citadel Advisors held 13,748 shares of Monarch ProCap Index ETF worth $449K as of Q2 2026.
  • Monarch ProCap Index ETF was a new Citadel Advisors position in Q2 2026.
  • Monarch ProCap Index ETF made up ﹤0.01% of Citadel Advisors's portfolio in Q2 2026, its #10135 holding.
  • Citadel Advisors first reported a position in Monarch ProCap Index ETF in Q1 2021 and has held it in 11 quarters since.
  • Citadel Advisors's Monarch ProCap Index ETF position peaked at $689K in Q2 2025.
  • 11 funds tracked by Wall St. Rank held Monarch ProCap Index ETF as of Q2 2026.

Based on Citadel Advisors's 13F filing for Q2 2026, filed 14 Aug 2026.