MACKAY SHIELDS LLC MFM — MFS MUN INCOME TR

Ownership history in MACKAY SHIELDS LLC  ·  45 quarters on record

AI Ownership Summary

MACKAY SHIELDS LLC reported MFS MUN INCOME TR (MFM) in 45 quarterly 13F filings from 2023 Q4 through 2026 Q1. Peak portfolio weight reached 0.08% in 2025 Q3. The latest visible filing shows MFM at 0.07% of the fund.

This page tracks quarterly shares, estimated market value, portfolio weight, filing dates, and disclosure-aligned stock prices directly from SEC EDGAR 13F filings. Older history is available after unlock; the visible window still shows the most recent pattern.

What this MFM ownership page tells you

This page is designed to answer the real investor question behind a 13F filing: how meaningful was MACKAY SHIELDS LLC's position in MFS MUN INCOME TR, and how did that conviction change over time? You can read the holding window, peak weight, latest reported size, disclosure timing, and quarter-by-quarter changes without piecing the story together from raw SEC rows.

Freshest filing
Latest Reported Filing
2026 Q1

MFM was reported at 0.07% of portfolio in the most recent visible filing.

High-water mark
Peak Conviction
0.08% in 2025 Q3

Peak weight helps separate a token disclosure from a real conviction holding the fund genuinely cared about.

Time in book
Holding Window
2023 Q4 to 2026 Q1

Longer holding windows often tell a very different story from short-lived tactical trades or one-quarter experiments.

Decision context
Why It Matters
Position size beats headlines

Knowing that a fund owned a stock is useful. Knowing whether it was a 0.20% placeholder or a true high-conviction position is where the signal actually starts.

MFM stock page MACKAY SHIELDS LLC fund profile MACKAY SHIELDS LLC full holdings
How MACKAY SHIELDS LLC held MFM — position size vs. price
% of Fund (quarterly)    MFM price (quarter-end, indexed to 100)    SPY (indexed to 100)    QQQ (indexed to 100)
📋 Quarterly Holdings History 10 quarters  ▾
Quarter Action Sold % After 3M Timing Shares Change Chg % % of Fund Mkt Value Filed Price (Filed)
2026 Q1 REDUCED — — — 333,155 -6,502 -1.9% 0.07% $1.8M 2026-04-27 $5.39
2025 Q4 REDUCED 21.6% +0.6% ❌ 339,657 -93,498 -21.6% 0.06% $1.8M 2026-01-29 $5.47
2025 Q3 ADDED — — — 433,155 +100,000 +30.0% 0.08% $2.33B 2025-10-27 $5.31
2025 Q2 UNCHANGED — — — 333,155 — 0% 0.06% $1.72B 2025-07-24 $4.84
2025 Q1 UNCHANGED — — — 333,155 — 0% 0.06% $1.77B 2025-04-29 $4.88
2024 Q4 UNCHANGED — — — 333,155 — 0% 0.05% $1.78B 2025-02-04 $5.09
2024 Q3 UNCHANGED — — — 333,155 — 0% 0.05% $1.91B 2024-10-31 $5.18
2024 Q2 UNCHANGED — — — 333,155 — 0% 0.06% $1.82B 2024-08-08 $5.01
2024 Q1 UNCHANGED — — — 333,155 — 0% 0.05% $1.79B 2024-05-03 $4.64
2023 Q4 UNCHANGED — — — 333,155 — 0% 0.05% $1.72B 2024-02-02 $4.65
35 older quarters hidden  —  Sign in free or upgrade to Premium to see full history

🏢 Other funds also holding MFM

As of 2026 Q1 — sorted by position size

MELFA WEALTH MANAGEMENT, INC. 3Y 0.47% BALANCED WEALTH GROUP LLC 0.38% Catalina Capital Group, LLC 0.23% RIVERBRIDGE PARTNERS LLC 3Y 7Y 0.02% Activest Wealth Management 3Y 0.01% SILVERLAKE WEALTH MANAGEMENT LLC 3Y 0.01% AMARILLO NATIONAL BANK 3Y 7Y 0.01% Capital Investment Advisors, LLC 3Y 7Y 0.01% Private Advisor Group, LLC 3Y 7Y 0.0% Wealthcare Advisory Partners LLC 3Y 7Y 0.0%

FAQ About MACKAY SHIELDS LLC and MFM

These are the practical questions this page is built to answer before you even open the full history table.

How long has MACKAY SHIELDS LLC reported owning MFM?

MACKAY SHIELDS LLC reported MFM across 10 quarterly 13F filings, from 2023 Q4 through 2026 Q1.

What was the largest reported MFM position in MACKAY SHIELDS LLC's portfolio?

The largest reported portfolio weight for MFM was 0.08% in 2025 Q3.

What is the latest reported MFM position on this page?

The most recent filing on this page is 2026 Q1, when MACKAY SHIELDS LLC reported 333,155 shares, equal to 0.07% of portfolio, with an estimated market value of $1.8M.

What does the chart on this MFM ownership page compare?

The chart compares MACKAY SHIELDS LLC's quarterly MFM portfolio weight with the stock's indexed share price, so you can see whether the fund was building, trimming, or holding the position as price moved.

How well did MACKAY SHIELDS LLC time their MFM position?

Based on 13F filing dates vs. subsequent MFM price moves, MACKAY SHIELDS LLC correctly timed 7 out of 13 reported position changes (54%). The annualised alpha on MFM relative to SPY over the holding period was -9.3%.

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