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Tremallo Mark V B: insider trades

Officer at Skyworks Solutions, Inc. No open-market purchases and 16 sales not made under a pre-set plan, reported from March 4, 2010 to May 6, 2015.

What happened after Tremallo Mark V B’s sales?

After their sales, the shares moved −7.8% against the index over 12 months on average (a negative figure means selling was the right call); 75% 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

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 +3.9% +5.2% 38% 5 0.32 0.76 No reliable evidence
Sales, 12 months after the report 16 −7.8% −33.3% 75% 5 0.25 0.81 No reliable evidence
Sales, 12 months after the trade 16 −8.6% −30.6% 75% 5 0.24 0.82 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
Skyworks Solutions, Inc. SWKS VP, General Counsel &Secretary016March 4, 2010May 6, 2015

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 6, 2015May 4, 2015 SWKS Sale $309,288 −11.3%−33.2%−31.2%
May 6, 2014May 2, 2014 SWKS Sale $1,108,556 +24.9%+125.1%+126.7%
August 21, 2012August 17, 2012 SWKS Sale $147,500 −25.7%−33.4%−35.2%
August 14, 2012August 10, 2012 SWKS Sale $234,720 −25.9%−33.8%−39.2%
August 7, 2012August 3, 2012 SWKS Sale $226,000 −28.9%−38.4%−40.7%
June 8, 2012June 7, 2012 SWKS Sale $273,325 +1.4%−46.0%−48.6%
February 6, 2012February 3, 2012 SWKS Sale $411,000 +2.4%−14.1%−12.7%
November 9, 2011November 7, 2011 SWKS Sale $785,159 +14.3%−3.9%−17.8%
February 8, 2011February 4, 2011 SWKS Sale $104,070 −20.3%−34.7%−37.5%
January 26, 2011January 24, 2011 SWKS Sale $293,016 −21.2%−36.4%−30.1%
November 29, 2010November 24, 2010 SWKS Sale $348,421 +24.4%−46.3%−43.3%
November 19, 2010November 19, 2010 SWKS Sale $1,083,355 +24.9%−34.8%−33.0%
November 10, 2010November 8, 2010 SWKS Sale $1,725,548 +46.7%−22.4%−15.8%
September 13, 2010September 13, 2010 SWKS Sale $562,200 +30.2%+3.9%+2.3%
July 28, 2010July 26, 2010 SWKS Sale $304,960 +18.3%+20.7%+15.9%
March 4, 2010March 3, 2010 SWKS Sale $388,360 +8.0%+103.6%+103.1%

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 Tremallo Mark V B traded and do not suggest the use of non-public information. How every insider compares · the insider trading backtest.