First Trust Exchange-Traded Fund III - First Trust Short Duration Managed Municipal ETF
US ˙ ARCA

SecurityFSMB / First Trust Exchange-Traded Fund III - First Trust Short Duration Managed Municipal ETF
InstitutionRMR Wealth Builders
Latest Disclosed Ownership1,077,267 shares
Latest Disclosed Value $ 21,502,249
RMR Wealth Builders reports 5.28% increase in ownership of FSMB / First Trust Exchange-Traded Fund III - First Trust Short Duration Managed Municipal ETF

On April 22, 2026 - RMR Wealth Builders filed a 13F-HR form disclosing ownership of 1,077,267 shares of First Trust Exchange-Traded Fund III - First Trust Short Duration Managed Municipal ETF (US:FSMB) valued at $21,502,249 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 29, 2026 disclosing 1,023,222 shares of First Trust Exchange-Traded Fund III - First Trust Short Duration Managed Municipal ETF. This represents a change in shares of 5.28% during the quarter. The current value of the position is $21,550,726 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.

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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)
2026-04-22 2026-03-31 13F FIRST TR EXCH TRADED FD III SHRT DUR MNG MUN 33739P830 1,077,267 54,045 5.28 21,502 4.84 1.6932
2026-01-29 2025-12-31 13F FIRST TR EXCH TRADED FD III SHRT DUR MNG MUN 33739P830 1,023,222 79,371 8.41 20,510 8.22 1.6409
2025-11-05 2025-09-30 13F FIRST TR EXCH TRADED FD III SHRT DUR MNG MUN 33739P830 943,851 81,683 9.47 18,953 10.44 1.5861
2025-07-08 2025-06-30 13F FIRST TR EXCH TRADED FD III SHRT DUR MNG MUN 33739P830 862,168 49,158 6.05 17,161 6.23 1.5598
2025-04-16 2025-03-31 13F FIRST TR EXCH TRADED FD III SHRT DUR MNG MUN 33739P830 813,010 100,756 14.15 16,154 14.32 1.7003
2025-01-14 2024-12-31 13F/A-1 FIRST TR EXCH TRADED FD III SHRT DUR MNG MUN 33739P830 712,254 6,133 0.87 14,131 0.01 1.4605
2025-01-10 2024-12-31 13F FIRST TR EXCH TRADED FD III SHRT DUR MNG MUN 33739P830 712,254 6,133 14,131 1.4693
2024-10-21 2024-09-30 13F FIRST TR EXCH TRADED FD III SHRT DUR MNG MUN 33739P830 706,121 63,662 9.91 14,129 11.24 1.4972
2024-07-23 2024-06-30 13F FIRST TR EXCH TRADED FD III SHRT DUR MNG MUN 33739P830 642,459 34,026 5.59 12,701 5.25 1.4576
2024-04-15 2024-03-31 13F FIRST TR EXCH TRADED FD III SHRT DUR MNG MUN 33739P830 608,433 129,078 26.93 12,068 26.19 1.4593
2024-02-06 2023-12-31 13F FIRST TR EXCH TRADED FD III SHRT DUR MNG MUN 33739P830 479,355 86,600 22.05 9,563 25.61 1.3436
2023-10-23 2023-09-30 13F FIRST TR EXCH TRADED FD III SHRT DUR MNG MUN 33739P830 392,755 8,713 2.27 7,614 0.44 1.2159
2023-07-21 2023-06-30 13F FIRST TR EXCH TRADED FD III SHRT DUR MNG MUN 33739P830 384,042 103,369 36.83 7,581 35.87 1.2896
2023-04-11 2023-03-31 13F FIRST TR EXCH TRADED FD III SHRT DUR MNG MUN 33739P830 280,673 80,405 40.15 5,580 41.13 1.0610
2023-02-15 2022-12-31 13F/A-1 FIRST TR EXCH TRADED FD III SHRT DUR MNG MUN 33739P830 200,268 -33,320 -14.26 3,953 -13.20 0.8963
2023-02-02 2022-12-31 13F FIRST TR EXCH TRADED FD III SHRT DUR MNG MUN 33739P830 200,268 -33,320 4 1.0655
2022-11-08 2022-09-30 13F FIRST TR EXCH TRADED FD III SHRT DUR MNG MUN 33739P830 233,588 112,803 93.39 4,554 89.91 1.1140
2022-08-02 2022-06-30 13F FIRST TR EXCH TRADED FD III SHRT DUR MNG MUN 33739P830 120,785 31,399 35.13 2,398 33.59 0.5976
2022-05-13 2022-03-31 13F FIRST TR EXCH TRADED FD III SHRT DUR MNG MUN 33739P830 89,386 52,994 145.62 1,795 137.12 0.3850
2022-02-02 2021-12-31 13F FIRST TR EXCH TRADED FD III SHRT DUR MNG MUN 33739P830 36,392 36,392 757 0.2174
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.