Rivernorth 관리 기간 지방자치단체 소득 기금 Inc.
US ˙ NYSE ˙ US76882H1059

SecurityRMM / Rivernorth Managed Duration Municipal Income Fund Inc.
InstitutionOppenheimer & Co Inc
Latest Disclosed Ownership53,860 shares
Latest Disclosed Value $ 734,112
Oppenheimer & Co Inc reports 11.41% increase in ownership of RMM / Rivernorth Managed Duration Municipal Income Fund Inc.

On April 23, 2026 - Oppenheimer & Co Inc filed a 13F-HR form disclosing ownership of 53,860 shares of Rivernorth Managed Duration Municipal Income Fund Inc. (US:RMM) valued at $734,112 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 2, 2026 disclosing 48,342 shares of Rivernorth Managed Duration Municipal Income Fund Inc.. This represents a change in shares of 11.41% during the quarter. The current value of the position is $782,047 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

Upgrade to unlock premium data and export to Excel .

Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-04-23 2026-03-31 13F RIVERNORTH MANAGED DUR MUN I COM 76882H105 53,860 5,518 11.41 734 11.72 0.0089
2026-02-02 2025-12-31 13F RIVERNORTH MANAGED DUR MUN I COM 76882H105 48,342 48,342 658 0.0093
2025-11-06 2025-09-30 13F RIVERNORTH MANAGED DUR MUN I COM 76882H105 0 -38,406 -100.00 0 -100.00
2025-07-31 2025-06-30 13F RIVERNORTH MANAGED DUR MUN I COM 76882H105 38,406 3,506 10.05 515 3.21 0.0068
2025-04-23 2025-03-31 13F RIVERNORTH MANAGED DUR MUN I COM 76882H105 34,900 9,700 38.49 500 37.47 0.0075
2025-02-05 2024-12-31 13F RIVERNORTH MANAGED DUR MUN I COM 76882H105 25,200 3,200 14.55 363 2.83 0.0054
2024-11-05 2024-09-30 13F RIVERNORTH MANAGED DUR MUN I COM 76882H105 22,000 -1,600 -6.78 354 -1.94 0.0054
2024-08-08 2024-06-30 13F RIVERNORTH MANAGED DUR MUN I COM 76882H105 23,600 0 0.00 360 1.98 0.0057
2024-05-07 2024-03-31 13F RIVERNORTH MANAGED DUR MUN I COM 76882H105 23,600 23,600 353 0.0059
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.