undamentalytics Newsletter

Tutor Ronald N: insider trades

Chief executive, Director at Tutor Perini Corp. 4 open-market purchases and 86 sales not made under a pre-set plan, reported from June 9, 2010 to September 2, 2026.

Would copying Tutor Ronald N’s purchases have beaten the S&P 500?

Too few purchases to judge. Only 4 purchases have 12 months of prices after the report; we judge insiders once they have 20. The figures below can swing a long way on a handful of trades. Buying each purchase the day after it was reported, an equal amount each, and holding it 12 months or until they reported a sale would have turned $10,000 on June 3, 2015 into $13,276 by November 2, 2026, +2.5% a year. The copy held shares only 9% of the time, so the fair comparison is the S&P 500 on those same days with Treasury bills otherwise: $12,992, +2.3% a year (the S&P 500 held throughout made $43,130, +13.7% a year). Beta against the index was 0.11. Twelve months after each report, the average purchase was −2.9% against the S&P 500 (median −3.0%), and 0% beat it. Measured from the trade date, the insider’s own timing, the average was −2.2%. After their sales, the shares moved +5.9% against the index over 12 months on average (a negative figure means selling was the right call); 60% 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.

$0$20.0k$40.0k 201520172019202120232025 $43.1k$13.3k$13.0k
Copying Tutor Ronald NS&P 500, same days investedS&P 500, held throughout $10,000 copying Tutor Ronald N’s open-market purchases from June 3, 2015, before costs and taxes, marked weekly. Each purchase gets the same starting stake, bought at the close of the first trading day after the report and sold 12 months later or the day after a reported sale of that stock; uninvested money earns the Treasury bill rate. “Same days invested” holds the S&P 500 only on the days the copy held shares, Treasury bills otherwise.
Return a year, copying
+2.5%
S&P 500, same days invested
+2.3% (held throughout +13.7%)
Time in shares
9%
Sharpe ratio (S&P 500)
0.10 (0.69)
Biggest drop (S&P 500)
−55% (−34%)
Market sensitivity (beta)
0.11
Purchases copied
4

Trade by trade

Tutor Ronald N: trades against the S&P 500 afterwards
MeasuredTrades countedAverage vs S&P 500MedianWent the right wayYearst-statisticp-valueEvidence
Purchases, 3 months after the report 4 −18.9% −19.8% 0% 1 — — Not enough years
Purchases, 6 months after the report 4 −21.9% −22.6% 0% 1 — — Not enough years
Purchases, 12 months after the report 4 −2.9% −3.0% 0% 1 — — Not enough years
Purchases, 12 months after the trade 4 −2.2% −2.2% 25% 1 — — Not enough years
Sales, 3 months after the report 85 +1.9% +1.5% 45% 13 0.00 1.00 No reliable evidence
Sales, 12 months after the report 85 +5.9% −22.2% 60% 13 0.40 0.69 No reliable evidence
Sales, 12 months after the trade 85 +5.0% −23.7% 60% 13 0.39 0.71 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
Tutor Perini Corp TPC Chairman & CEO486June 9, 2010September 2, 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
September 2, 2026August 31, 2026 TPC Sale $197,709,600 not yetnot yetnot yet
September 19, 2025September 17, 2025 TPC Sale $12,902,351 +2.5%+10.3%+16.9%
September 5, 2025September 3, 2025 TPC Sale $2,620,169 +3.7%+24.1%+27.0%
September 2, 2025August 28, 2025 TPC Sale $4,835,567 +6.4%+27.0%+28.7%
August 26, 2025August 22, 2025 TPC Sale $16,221,619 +6.2%+31.3%+30.0%
June 11, 2025June 10, 2025 TPC Sale $6,536,843 +40.5%+53.2%+58.9%
June 4, 2025June 2, 2025 TPC Sale $5,734,500 +51.6%+59.9%+62.8%
November 12, 2024November 8, 2024 TPC Sale $5,378,986 −21.3%+95.5%+88.5%
June 17, 2024June 13, 2024 TPC Sale $485,000 +9.8%+88.1%+106.6%
June 10, 2024June 6, 2024 TPC Sale $1,512,538 +13.2%+103.2%+81.9%
March 5, 2024March 1, 2024 TPC Sale $593,000 +83.4%+104.0%+116.7%
December 20, 2023December 18, 2023 TPC Sale $862,626 +49.9%+160.3%+158.3%
November 27, 2023November 22, 2023 TPC Sale $811,000 +26.5%+200.1%+217.7%
September 20, 2023September 18, 2023 TPC Sale $402,500 +0.2%+198.3%+178.9%
September 18, 2023September 14, 2023 TPC Sale $200,000 +2.2%+198.1%+171.8%
September 13, 2023September 11, 2023 TPC Sale $206,750 +4.8%+171.8%+148.3%
June 8, 2022June 6, 2022 TPC Sale $512,500 −31.2%−38.9%−37.1%
May 25, 2022May 23, 2022 TPC Sale $965,500 −29.0%−49.0%−44.7%
December 17, 2021December 16, 2021 TPC Sale $886,799 −16.0%−22.2%−23.7%
December 1, 2021November 29, 2021 TPC Sale $805,200 −18.5%−32.4%−32.9%
September 14, 2021September 10, 2021 TPC Sale $2,024,000 −11.4%−36.6%−41.4%
September 10, 2021September 8, 2021 TPC Sale $695,500 −12.2%−40.1%−41.6%
June 14, 2021June 10, 2021 TPC Sale $2,804,545 −14.0%−27.0%−30.2%
June 10, 2021June 8, 2021 TPC Sale $3,447,571 −13.0%−28.1%−34.1%
June 8, 2021June 4, 2021 TPC Sale $1,881,576 −17.6%−34.4%−33.5%
March 19, 2021March 18, 2021 TPC Sale $907,500 −28.5%−57.0%−55.3%
March 3, 2021March 1, 2021 TPC Sale $1,288,016 −12.9%−55.4%−50.5%
November 18, 2020November 16, 2020 TPC Sale $1,442,366 +20.6%−30.4%−30.6%
September 18, 2020September 17, 2020 TPC Sale $508,400 +6.0%−26.2%−32.6%
September 1, 2020August 28, 2020 TPC Sale $750,000 +1.2%−14.3%−18.0%
June 19, 2020June 18, 2020 TPC Sale $357,900 −8.9%−19.3%−22.9%
June 11, 2020June 9, 2020 TPC Sale $967,500 +0.6%−8.9%−13.4%
June 20, 2019June 18, 2019 TPC Sale $665,500 −3.3%−20.5%−16.5%
May 15, 2019May 13, 2019 TPC Sale $827,600 −40.3%−58.1%−58.3%
December 21, 2018December 19, 2018 TPC Sale $1,209,750 −7.7%−53.9%−46.8%
August 29, 2018August 27, 2018 TPC Sale $654,836 −3.3%−55.9%−53.7%
August 24, 2018August 22, 2018 TPC Sale $1,359,676 −0.1%−53.7%−52.3%
June 13, 2018June 11, 2018 TPC Sale $991,500 +4.3%−36.8%−35.6%
May 31, 2018May 30, 2018 TPC Sale $1,026,500 −5.8%−26.5%−32.0%
March 7, 2018March 5, 2018 TPC Sale $1,113,000 −14.3%−21.1%−21.6%
December 7, 2017December 5, 2017 TPC Sale $640,000 −22.2%−39.3%−35.3%
December 4, 2017November 30, 2017 TPC Sale $629,250 −15.4%−35.3%−32.1%
September 13, 2017September 11, 2017 TPC Sale $1,957,211 −2.1%−38.6%−39.5%
September 8, 2017September 6, 2017 TPC Sale $652,750 +0.5%−39.5%−41.2%
June 17, 2015June 15, 2015 TPC Purchase $238,493 −19.0%−3.8%−5.0%
June 10, 2015June 8, 2015 TPC Purchase $841,609 −20.9%−3.3%−2.6%
June 5, 2015June 3, 2015 TPC Purchase $2,139,949 −20.7%−2.6%−1.8%
June 2, 2015May 29, 2015 TPC Purchase $1,221,926 −15.1%−1.8%+0.8%
December 18, 2013December 16, 2013 TPC Sale $1,827,710 +13.8%−20.5%−31.4%
December 13, 2013December 11, 2013 TPC Sale $1,983,694 +11.2%−31.4%−29.6%
September 20, 2013September 17, 2013 TPC Sale $1,903,500 +20.6%+20.0%+32.4%
August 21, 2013August 19, 2013 TPC Sale $1,903,012 +8.6%+30.0%+36.7%
June 11, 2013June 7, 2013 TPC Sale $683,725 +7.4%+56.7%+58.8%
June 6, 2013June 4, 2013 TPC Sale $1,957,892 +3.2%+58.8%+46.8%
May 21, 2013May 17, 2013 TPC Sale $912,000 +6.2%+58.4%+55.1%
March 20, 2013March 18, 2013 TPC Sale $3,668,435 −9.7%+35.3%+39.7%
March 13, 2013March 11, 2013 TPC Sale $3,443,250 −9.2%+37.2%+43.2%
December 26, 2012December 20, 2012 TPC Sale $699,000 +27.4%+57.3%+51.8%
November 28, 2012November 27, 2012 TPC Sale $939,000 +20.1%+59.8%+59.3%
November 26, 2012November 21, 2012 TPC Sale $1,505,000 +27.8%+59.3%+62.2%
November 20, 2012November 16, 2012 TPC Sale $1,813,025 +34.4%+62.2%+66.4%
November 15, 2012November 13, 2012 TPC Sale $1,689,508 +53.6%+66.4%+51.8%
November 8, 2012November 6, 2012 TPC Sale $624,500 +30.6%+43.8%+44.8%
September 20, 2012September 18, 2012 TPC Sale $1,178,731 +16.5%+58.3%+50.6%
June 14, 2012June 14, 2012 TPC Sale $1,107,791 −8.8%+31.6%+40.1%
June 13, 2012June 11, 2012 TPC Sale $3,227,015 −4.8%+40.1%+25.3%
March 21, 2012March 19, 2012 TPC Sale $1,558,342 −20.1%+11.0%+9.3%
March 15, 2012March 13, 2012 TPC Sale $6,070,000 −20.5%+7.6%+6.8%
March 8, 2012March 6, 2012 TPC Sale $4,135,809 −16.9%+3.1%+7.7%
December 20, 2011December 19, 2011 TPC Sale $1,888,633 +8.8%−10.5%−8.5%
December 8, 2011December 6, 2011 TPC Sale $4,278,698 −8.2%−23.5%−27.8%
December 5, 2011December 1, 2011 TPC Sale $7,985,011 −14.5%−27.8%−31.0%
November 21, 2011November 17, 2011 TPC Sale $2,398,500 −10.0%−41.4%−45.3%
September 9, 2011September 7, 2011 TPC Sale $1,567,680 +1.5%−41.4%−42.1%
September 6, 2011September 1, 2011 TPC Sale $611,800 +3.8%−42.1%−40.8%
August 31, 2011August 29, 2011 TPC Sale $556,300 +11.4%−40.8%−44.9%
August 26, 2011August 24, 2011 TPC Sale $3,132,600 +7.0%−44.9%−42.9%
August 23, 2011August 19, 2011 TPC Sale $4,539,917 +15.6%−42.9%−44.6%
August 18, 2011August 16, 2011 TPC Sale $6,220,500 +16.2%−44.6%−48.3%
August 11, 2011August 9, 2011 TPC Sale $5,517,198 +7.7%−47.0%−44.0%
June 15, 2011June 14, 2011 TPC Sale $1,985,000 −23.7%−48.2%−48.0%
May 19, 2011May 17, 2011 TPC Sale $6,115,494 −19.7%−42.0%−46.6%
May 16, 2011May 12, 2011 TPC Sale $7,650,169 −19.5%−46.6%−49.4%
March 18, 2011March 17, 2011 TPC Sale $3,917,339 −19.1%−46.2%−43.2%
March 16, 2011March 14, 2011 TPC Sale $7,508,987 −12.5%−43.2%−45.6%
December 2, 2010November 30, 2010 TPC Sale $87,750,000 +12.4%−25.2%−22.8%
September 20, 2010September 17, 2010 TPC Sale $9,452,100 +4.5%−36.9%−34.9%
September 15, 2010September 13, 2010 TPC Sale $9,780,000 +3.4%−32.8%−34.4%
August 16, 2010August 12, 2010 TPC Sale $7,924,000 +6.6%−36.5%−37.2%
June 9, 2010June 9, 2010 TPC Sale $10,008,000 +11.3%−4.1%−5.6%

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