undamentalytics Newsletter

Nemerov Jackwyn: insider trades

Officer, Director at 2 companies we cover. No open-market purchases and 23 sales not made under a pre-set plan, reported from March 18, 2010 to June 12, 2026.

What happened after Nemerov Jackwyn’s sales?

After their sales, the shares moved −5.2% against the index over 12 months on average (a negative figure means selling was the right call); 73% 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

Nemerov Jackwyn: 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 23 −7.5% −11.0% 65% 9 −2.43 0.041 Some evidence: seller right
Sales, 12 months after the report 22 −5.2% −11.5% 73% 8 −0.97 0.36 No reliable evidence
Sales, 12 months after the trade 22 −5.5% −11.6% 73% 8 −1.04 0.33 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
Ralph Lauren Corporation RL President & COO020March 18, 2010November 9, 2015
TJX Companies TJX —03September 16, 2024June 12, 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
June 12, 2026June 11, 2026 TJX Sale $161,350 −25.9%not yetnot yet
September 3, 2025September 2, 2025 TJX Sale $164,496 +1.1%−25.2%−24.9%
September 16, 2024September 12, 2024 TJX Sale $139,251 −2.8%+0.4%0.0%
November 9, 2015November 6, 2015 RL Sale $6,083,927 −25.5%−27.7%−29.4%
December 12, 2014December 11, 2014 RL Sale $1,237,455 −32.4%−40.3%−37.5%
November 19, 2014November 18, 2014 RL Sale $2,116,920 −26.6%−34.1%−35.0%
June 16, 2014June 13, 2014 RL Sale $4,353,246 +8.5%−22.1%−21.5%
June 4, 2014June 4, 2014 RL Sale $4,200,565 +8.7%−20.1%−21.7%
December 12, 2013December 12, 2013 RL Sale $4,613,493 −12.2%−10.3%−8.8%
December 11, 2013December 11, 2013 RL Sale $1,432,663 −11.6%−8.8%−9.6%
December 11, 2013December 10, 2013 RL Sale $3,435,600 −11.6%−8.8%−8.6%
December 2, 2013November 29, 2013 RL Sale $158,013 −11.4%−10.9%−11.3%
November 27, 2013November 26, 2013 RL Sale $1,098,574 −11.5%−11.3%−12.2%
November 19, 2013November 15, 2013 RL Sale $1,495,689 −11.3%−11.8%−14.5%
September 17, 2012September 14, 2012 RL Sale $1,407,646 −2.0%−13.1%−15.7%
February 15, 2012February 14, 2012 RL Sale $1,571,130 −13.8%−13.3%−13.3%
December 6, 2011December 5, 2011 RL Sale $2,580,000 +9.0%−12.2%−11.7%
September 19, 2011September 16, 2011 RL Sale $3,688,495 −11.0%−18.5%−11.4%
February 23, 2011February 18, 2011 RL Sale $595,200 −8.7%+34.1%+32.1%
February 14, 2011February 11, 2011 RL Sale $1,783,941 +4.7%+35.6%+32.8%
December 3, 2010December 2, 2010 RL Sale $889,707 +5.3%+30.8%+23.5%
November 15, 2010November 11, 2010 RL Sale $11,173,329 +8.8%+43.7%+38.5%
March 18, 2010March 17, 2010 RL Sale $8,220,149 +0.4%+29.8%+38.6%

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 Nemerov Jackwyn traded and do not suggest the use of non-public information. How every insider compares · the insider trading backtest.