undamentalytics Newsletter

Copeland Rex A: insider trades

Officer at Great Southern Bancorp, Inc. No open-market purchases and 16 sales not made under a pre-set plan, reported from February 24, 2010 to May 1, 2026.

What happened after Copeland Rex A’s sales?

After their sales, the shares moved −9.4% against the index over 12 months on average (a negative figure means selling was the right call); 79% trailed it.

With 296 insiders tested, some will look skilled or unskilled by chance alone: when we replaced each insider’s stocks with random companies bought on the same days, about 5.7 cleared the bar ahead and 23.3 behind. One record on its own proves little.

Trade by trade

Copeland Rex A: trades against the S&P 500 afterwards
MeasuredTrades countedAverage vs S&P 500MedianWent the right wayYearst-statisticp-valueEvidence
Purchases, 3 months after the report 0 — — — — — — Not enough years
Purchases, 6 months after the report 0 — — — — — — Not enough years
Purchases, 12 months after the report 0 — — — — — — Not enough years
Purchases, 12 months after the trade 0 — — — — — — Not enough years
Sales, 3 months after the report 16 −1.3% −1.7% 56% 10 −1.23 0.25 No reliable evidence
Sales, 12 months after the report 14 −9.4% −17.3% 79% 9 −1.85 0.10 No reliable evidence
Sales, 12 months after the trade 14 −10.3% −16.6% 79% 9 −2.07 0.072 No reliable evidence

“Average vs S&P 500” is the stock’s return including dividends minus the index’s over the same dates, from the close on the first trading day after the report, or from the close on the trade date. Only windows that have finished are counted. For sales, a negative figure means the stock lagged after it was sold, so selling was the right call (green). “Went the right way” is the share of purchases that beat the index, or of sales that trailed it. The t-statistic uses one average per year of reports, because one person’s trades bunch into the same stock and weeks, and needs trades in at least four different years; the p-value comes from the t distribution with that number of years (with four years, a t of 2 has p = 0.14). “Some evidence” means p under 5%, “strong evidence” p under 1% over at least six years.

Companies traded

CompanyTitle on the latest filingPurchasesSalesFirst reportLatest report
Great Southern Bancorp, Inc. GSBC Treasurer016February 24, 2010May 1, 2026

Trades and what followed

Moves are against the S&P 500; green means the trade went the insider’s way.

ReportedTradedCompanyTradeValue3 months after report12 months after report12 months after trade
May 1, 2026April 30, 2026 GSBC Sale $201,813 +12.3%not yetnot yet
February 6, 2026February 6, 2026 GSBC Sale $114,415 +2.0%not yetnot yet
November 8, 2024November 6, 2024 GSBC Sale $279,678 −8.4%−19.7%−28.1%
November 22, 2022November 21, 2022 GSBC Sale $65,124 −3.6%−28.7%−30.8%
July 26, 2022July 26, 2022 GSBC Sale $262,878 +0.8%−25.0%−26.8%
May 6, 2019May 3, 2019 GSBC Sale $62,202 −2.6%−32.3%−26.7%
February 19, 2019February 19, 2019 GSBC Sale $233,772 −2.3%−18.5%−18.9%
May 23, 2018May 22, 2018 GSBC Sale $19,265 +0.6%−4.2%−5.3%
May 2, 2018May 2, 2018 GSBC Sale $71,541 +4.0%−0.4%−0.8%
April 27, 2018April 26, 2018 GSBC Sale $42,228 +5.9%+1.1%+0.4%
October 26, 2017October 25, 2017 GSBC Sale $288,750 −16.9%−5.7%−8.4%
November 22, 2016November 22, 2016 GSBC Sale $210,210 −7.2%−16.1%−14.3%
November 26, 2014November 25, 2014 GSBC Sale $344,038 −1.2%+36.6%+32.4%
November 25, 2014November 21, 2014 GSBC Sale $19,405 −2.4%+33.8%+32.3%
July 31, 2012July 27, 2012 GSBC Sale $178,202 −7.2%−24.7%−22.3%
February 24, 2010February 24, 2010 GSBC Sale $70,543 +6.1%−27.4%−27.8%

Open-market purchases and sales of at least $10,000 in companies we cover, from SEC Form 4 filings; sales made under a pre-set Rule 10b5-1 plan are not shown. “Not yet” means the window has not finished or the share price was under $5 at entry. These are the shares’ moves after each trade: they say nothing about why Copeland Rex A traded and do not suggest the use of non-public information. How every insider compares · the insider trading backtest.