North Star Investment Management Corp. RFIL — Rf Industries Inc

Ownership history in North Star Investment Management Corp.  ·  50 quarters on record

AI Ownership Summary

North Star Investment Management Corp. reported Rf Industries Inc (RFIL) in 50 quarterly 13F filings from 2024 Q1 through 2026 Q1. The latest visible filing shows RFIL at 0.00% 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 RFIL ownership page tells you

This page is designed to answer the real investor question behind a 13F filing: how meaningful was North Star Investment Management Corp.'s position in Rf Industries Inc, 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

RFIL was reported at 0.00% of portfolio in the most recent visible filing.

High-water mark
Peak Conviction
0.0% in 2026 Q1

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

Time in book
Holding Window
2024 Q1 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.

RFIL stock page North Star Investment Management Corp. fund profile North Star Investment Management Corp. full holdings
How North Star Investment Management Corp. held RFIL — position size vs. price
% of Fund (quarterly)    RFIL price (quarter-end, indexed to 100)    SPY (indexed to 100)    QQQ (indexed to 100)
📋 Quarterly Holdings History 9 quarters  ▾
Quarter Action Sold % After 3M Timing Shares Change Chg % % of Fund Mkt Value Filed Price (Filed)
2026 Q1 UNCHANGED — — — 1,325 — 0% 0.00% $14K 2026-04-23 $14.40
2025 Q4 UNCHANGED — — — 1,325 — 0% 0.00% $8K 2026-01-30 $9.76
2025 Q3 UNCHANGED — — — 1,325 — 0% 0.00% $11K 2025-10-22 $7.58
2025 Q2 UNCHANGED — — — 1,325 — 0% 0.00% $9K 2025-07-15 $7.40
2025 Q1 UNCHANGED — — — 1,325 — 0% 0.00% $6K 2025-04-17 $3.82
2024 Q4 UNCHANGED — — — 1,325 — 0% 0.00% $5K 2025-02-10 $5.36
2024 Q3 UNCHANGED — — — 1,325 — 0% 0.00% $5K 2024-10-30 $4.12
2024 Q2 UNCHANGED — — — 1,325 — 0% 0.00% $5K 2024-08-06 $3.54
2024 Q1 UNCHANGED — — — 1,325 — 0% 0.00% $4K 2024-04-30 $2.86
41 older quarters hidden  —  Sign in free or upgrade to Premium to see full history

🏢 Other funds also holding RFIL

As of 2026 Q1 — sorted by position size

PUNCH & ASSOCIATES INVESTMENT MANAGEMENT, INC. 3Y 7Y 0.49% Informed Momentum Co LLC 3Y 7Y 0.08% Integrated Quantitative Investments LLC 0.04% ESSEX INVESTMENT MANAGEMENT CO LLC 3Y 7Y 0.03% GSA CAPITAL PARTNERS LLP 3Y 7Y 0.03% RITHOLTZ WEALTH MANAGEMENT 3Y 7Y 0.02% BRIDGEWAY CAPITAL MANAGEMENT, LLC 3Y 7Y 0.02% OCCUDO QUANTITATIVE STRATEGIES LP 3Y 0.02% Founders Capital Management 3Y 7Y 0.02% AXQ CAPITAL, LP 3Y 0.01%

FAQ About North Star Investment Management Corp. and RFIL

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

How long has North Star Investment Management Corp. reported owning RFIL?

North Star Investment Management Corp. reported RFIL across 9 quarterly 13F filings, from 2024 Q1 through 2026 Q1.

What was the largest reported RFIL position in North Star Investment Management Corp.'s portfolio?

The largest reported portfolio weight for RFIL was 0.00% in 2026 Q1.

What is the latest reported RFIL position on this page?

The most recent filing on this page is 2026 Q1, when North Star Investment Management Corp. reported 1,325 shares, equal to 0.00% of portfolio, with an estimated market value of $14K.

What does the chart on this RFIL ownership page compare?

The chart compares North Star Investment Management Corp.'s quarterly RFIL 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 North Star Investment Management Corp. time their RFIL position?

Based on 13F filing dates vs. subsequent RFIL price moves, North Star Investment Management Corp. correctly timed 9 out of 19 reported position changes (47%). The annualised alpha on RFIL relative to SPY over the holding period was -4.3%.

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