MAINSTAY CAPITAL MANAGEMENT LLC /ADV SO — SOUTHERN COMPANY

Ownership history in MAINSTAY CAPITAL MANAGEMENT LLC /ADV  ·  34 quarters on record

AI Ownership Summary

MAINSTAY CAPITAL MANAGEMENT LLC /ADV reported SOUTHERN COMPANY (SO) in 34 quarterly 13F filings from 2024 Q1 through 2026 Q1. Peak portfolio weight reached 0.61% in 2024 Q3. The latest visible filing shows SO at 0.31% 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 SO ownership page tells you

This page is designed to answer the real investor question behind a 13F filing: how meaningful was MAINSTAY CAPITAL MANAGEMENT LLC /ADV's position in SOUTHERN COMPANY, 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

SO was reported at 0.31% of portfolio in the most recent visible filing.

High-water mark
Peak Conviction
0.61% in 2024 Q3

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.

SO stock page MAINSTAY CAPITAL MANAGEMENT LLC /ADV fund profile MAINSTAY CAPITAL MANAGEMENT LLC /ADV full holdings
How MAINSTAY CAPITAL MANAGEMENT LLC /ADV held SO — position size vs. price
% of Fund (quarterly)    SO 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 ADDED — — — 42,202 +1,039 +2.5% 0.31% $4.1M 2026-05-12 $92.70
2025 Q4 REDUCED — — — 41,163 -1,960 -4.5% 0.27% $3.6M 2026-01-27 $87.42
2025 Q3 REDUCED 49.7% -6.9% ✅ 43,123 -42,621 -49.7% 0.41% $4.1M 2025-12-10 $82.74
2025 Q2 ADDED — — — 85,744 +44,651 +108.7% 0.39% $7.9M 2025-07-24 $91.99
2025 Q1 REDUCED — — — 41,093 -124 -0.3% 0.52% $3.8M 2025-05-05 $87.43
2024 Q4 ADDED — — — 41,217 +514 +1.3% 0.52% $3.4M 2025-02-04 $79.22
2024 Q3 REDUCED — — — 40,703 -127 -0.3% 0.61% $3.7M 2024-10-23 $88.92
2024 Q2 ADDED — — — 40,830 +1,209 +3.1% 0.56% $3.2M 2024-07-30 $78.09
2024 Q1 ADDED — — — 39,621 +1,629 +4.3% 0.54% $2.8M 2024-04-30 $68.22
25 older quarters hidden  —  Sign in free or upgrade to Premium to see full history

🏢 Other funds also holding SO

As of 2026 Q2 — sorted by position size

CONFLUENCE INVESTMENT MANAGEMENT LLC 3Y 7Y 2.05% Hilltop National Bank 0.58% First County Bank /CT/ 3Y 0.43% MassMutual Private Wealth & Trust, FSB 3Y 7Y 0.17% Asset Management Advisors, LLC 3Y 7Y 0.16% EASTERN BANK 3Y 7Y 0.07% Roxbury Financial LLC 0.07% CX Institutional 3Y 7Y 0.06% Trust Co of the South 0.05% Kozak & Associates, Inc. 3Y 0.01%

FAQ About MAINSTAY CAPITAL MANAGEMENT LLC /ADV and SO

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

How long has MAINSTAY CAPITAL MANAGEMENT LLC /ADV reported owning SO?

MAINSTAY CAPITAL MANAGEMENT LLC /ADV reported SO across 9 quarterly 13F filings, from 2024 Q1 through 2026 Q1.

What was the largest reported SO position in MAINSTAY CAPITAL MANAGEMENT LLC /ADV's portfolio?

The largest reported portfolio weight for SO was 0.61% in 2024 Q3.

What is the latest reported SO position on this page?

The most recent filing on this page is 2026 Q1, when MAINSTAY CAPITAL MANAGEMENT LLC /ADV reported 42,202 shares, equal to 0.31% of portfolio, with an estimated market value of $4.1M.

What does the chart on this SO ownership page compare?

The chart compares MAINSTAY CAPITAL MANAGEMENT LLC /ADV's quarterly SO 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 MAINSTAY CAPITAL MANAGEMENT LLC /ADV time their SO position?

Based on 13F filing dates vs. subsequent SO price moves, MAINSTAY CAPITAL MANAGEMENT LLC /ADV correctly timed 17 out of 33 reported position changes (52%). The annualised alpha on SO relative to SPY over the holding period was -0.4%.

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