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Equibles

RMM

RiverNorth Managed Duration Municipal Income Fund, Inc.

Company with tickers: RMM

CIK
1771226
CUSIP
76882H105
Shares Outstanding
19,739,628
13F Activity (30d)
28 filings 26 filers

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Holders: 52
Total Value: $47,849,890
Total Shares: 3,510,632

Institutional Ownership Trend

25 quarters

Holder Concentration

Across 52 13F filers · Δ vs Dec 31, 2025
Top Holder
12.3%
Jun 2023 → Mar 2026 · range 11.9% – 17.5%
+0.4 pts
Top 5
43.4%
Jun 2023 → Mar 2026 · range 43.4% – 64.5%
−4.0 pts
Top 10
65.2%
Jun 2023 → Mar 2026 · range 65.2% – 87.4%
−3.1 pts
HHI
571
Jun 2023 → Mar 2026 · range 571 – 1,005
Broadly held −33

Quarterly Activity

vs Dec 31, 2025
New
6
Increased
18
Decreased
14
Sold Out
11
Unchanged
14
Holder count: -5
Institutional value: +5.2%
Shares held: +5.0%

Top Buyers

vs Dec 31, 2025
Institution Added Now Holds Open
Small Gateway Wealth Partners, LLC +73,345 115,380
Large Rockefeller Capital Management L.P. +37,377 132,982
Small ROBINSON CAPITAL MANAGEMENT, LLC +36,540 431,397
Mega RAYMOND JAMES FINANCIAL INC +34,921 105,918
Mega LPL Financial LLC +27,436 88,696

Top Sellers

vs Dec 31, 2025
Institution Sold Now Holds Open
Mega MORGAN STANLEY −89,726 229,863
Large STIFEL FINANCIAL CORP −20,981 59,865
Small Samalin Investment Counsel, LLC −7,064 54,560
Mid WEDBUSH SECURITIES INC −4,838 54,300
Mega WELLS FARGO & COMPANY/MN −3,193 395,336

Top New Positions

vs Dec 31, 2025
Institution Acquired Value (USD) Open
Mid Arkadios Wealth Advisors 107,967 $1,471,590
Large GUGGENHEIM CAPITAL LLC 106,317 $1,449,100
Mid RIVERNORTH CAPITAL MANAGEMENT, LLC 13,382 $182,396
Large FIFTH THIRD BANCORP 6,000 $81,780
Mid Advisory Services Network, LLC 4,760 $64,878

Top Sold-Out Positions

vs Dec 31, 2025
Institution Previously Held Last Value (USD) Open
Large Balyasny Asset Management L.P. 45,708 $622,085
Small Logan Stone Capital, LLC 39,029 $531,184
Mid READYSTATE ASSET MANAGEMENT LP 27,030 $367,878
Mid WOLVERINE ASSET MANAGEMENT LLC 20,447 $278,283
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP 16,581 $225,667
Filter: New 6 Increased 18 Reduced 14 Sold out 11 Unchanged 14
Showing 52 of 52
All Common Calls Puts
Export CSV
Holder Value (USD) % of 13F Shares Open
Small ROBINSON CAPITAL MANAGEMENT, LLC $5,879,941 12.29% 431,397
Mega WELLS FARGO & COMPANY/MN $5,388,428 11.26% 395,336
Mega ROYAL BANK OF CANADA Bank $3,269,045 6.83% 239,842
Mega MORGAN STANLEY $3,133,032 6.55% 229,863
Mid Advisors Asset Management, Inc. $3,086,636 6.45% 226,459
Mid U.S. Capital Wealth Advisors, LLC $2,449,692 5.12% 179,728
Mega UBS Group AG $2,297,200 4.80% 168,540
Small ProVise Management Group, LLC $2,288,313 4.78% 167,888
Large Rockefeller Capital Management L.P. $1,812,544 3.79% 132,982
Small Gateway Wealth Partners, LLC $1,572,629 3.29% 115,380
Mid Arkadios Wealth Advisors $1,471,590 3.08% 107,967
Small Wagner Wealth Management, LLC $1,471,590 3.08% 107,967
Large GUGGENHEIM CAPITAL LLC $1,449,100 3.03% 106,317
Mega RAYMOND JAMES FINANCIAL INC $1,443,661 3.02% 105,918
Mega LPL Financial LLC $1,208,926 2.53% 88,696
Large STIFEL FINANCIAL CORP $815,959 1.71% 59,865
Small Samalin Investment Counsel, LLC $743,652 1.55% 54,560
Mid WEDBUSH SECURITIES INC Broker-Dealer $740,109 1.55% 54,300
Mid OPPENHEIMER & CO INC $734,111 1.53% 53,860
Large OSAIC HOLDINGS, INC. $688,560 1.44% 50,518
Mid Apollon Wealth Management, LLC $605,580 1.27% 44,430
Small Estate Planners Group, LLC $573,863 1.20% 42,103
Small XML Financial, LLC $561,556 1.17% 41,200
Large HighTower Advisors, LLC $458,417 0.96% 33,633
Large &PARTNERS $446,218 0.93% 32,738
Large Janney Montgomery Scott LLC $355,743 0.74% 26,100
Mid Stratos Wealth Partners, LTD. $340,545 0.71% 24,985
Small Abel Hall, LLC $272,600 0.57% 20,000
Small River Street Advisors LLC $268,879 0.56% 19,727
Large COMMONWEALTH EQUITY SERVICES, LLC $254,622 0.53% 18,681
Large NewEdge Advisors, LLC $243,295 0.51% 17,850
Mid RIVERNORTH CAPITAL MANAGEMENT, LLC $182,396 0.38% 13,382
Mid AE Wealth Management LLC $181,279 0.38% 13,300
Mid CreativeOne Wealth, LLC $175,731 0.37% 12,893
Micro Closed-End Fund Advisors, Inc. $162,251 0.34% 11,904
Small MELFA WEALTH MANAGEMENT, INC. $149,671 0.31% 10,981
Mid PFG Investments, LLC $142,160 0.30% 10,430
Small Noble Wealth Management PBC $93,065 0.19% 6,828
Large FIFTH THIRD BANCORP Bank $81,780 0.17% 6,000
Mid EverSource Wealth Advisors, LLC $81,780 0.17% 6,000
Large Steward Partners Investment Advisory, LLC $81,234 0.17% 5,960
Mid Advisory Services Network, LLC $64,878 0.14% 4,760
Micro Advocate Investing Services LLC $34,075 0.07% 2,500
Large US BANCORP \DE\ Bank $27,260 0.06% 2,000
Micro Osbon Capital Management LLC $26,155 0.05% 1,919
Mid HARBOUR INVESTMENTS, INC. $17,037 0.04% 1,250
Small West Branch Capital LLC $6,815 0.01% 500
Small Bank of New Hampshire Bank $6,815 0.01% 500
Small HIGHLINE WEALTH PARTNERS LLC $6,133 0.01% 450
Mid HOLLENCREST CAPITAL MANAGEMENT $3,339 0.01% 245
Mega JPMORGAN CHASE & CO $0 0.00% 0
Mid Allworth Financial LP $0 0.00% 0

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