Here is what actually moved Katahdin Bankshares Corp. (KTHN): the 6 sessions in the last month that broke out of its normal range, each measured against the stock's own 60-day volatility rather than a fixed percentage.

2026-10-01 — $38.0000 (+2.70%)
Katahdin Bankshares rose 2.70% to $38.00, its biggest one-day gain in 3 months and a 3.9sigma move against its 60-day volatility, though on light volume (0.1x the 20-day average). This was largely stock-specific: the S&P 500 gained 0.18% while Financial Services peers (XLF) rose 0.11% that session, leaving about 2.6 points of the move unexplained by its sector. Shares opened with a 2.70% gap up and set a 52-week closing high. Historically, after 2.5sigma-or-larger up days, Katahdin Bankshares returned -0.61% on average over the following 5 sessions (36% positive, n=25).

2026-09-25 — $37.1000 (+0.22%)
Katahdin Bankshares rose 0.22% to $37.10, though on light volume (0.4x the 20-day average). Shares set a 52-week closing high.

2026-09-15 — $37.0700 (+1.92%)
Katahdin Bankshares rose 1.92% to $37.07, its biggest one-day gain in 2 months and a 1.5sigma move against its 60-day volatility, though on light volume (0.1x the 20-day average). This was largely stock-specific: the S&P 500 fell 0.46% while Financial Services peers (XLF) fell 0.32% that session, leaving about 2.0 points of the move unexplained by the market after adjusting for a 0.16 beta. Shares opened with a 1.92% gap up, reclaimed their 20-day moving average and set a 52-week closing high. Shares traded ex-dividend ($0.23 per share) this session.

2026-09-03 — $36.2700 (-1.39%)
Katahdin Bankshares fell 1.39% to $36.27, its biggest one-day drop in 4 weeks, on 2.1x average volume. This was largely stock-specific: the S&P 500 gained 1.05% while Financial Services peers (XLF) rose 1.56% that session, leaving about 1.6 points of the move unexplained by the market after adjusting for a 0.16 beta. Shares opened with a 1.36% gap down, closed near the session low (0% of the day's range) and lost their 20-day moving average.

2026-08-27 — $37.0000 (+0.00%)
Katahdin Bankshares rose 0.00% to $37.00. Shares set a 52-week closing high.

2026-08-26 — $37.0000 (+0.63%)
Katahdin Bankshares rose 0.63% to $37.00. Shares set a 52-week closing high.

The useful conclusion: separating what the market did from what the company did is most of the work; the attribution above does it session by session.

Historical frequencies describe what has happened, which is not a promise about what will.

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