Lewis Chew - Insider Trading Tracker

Introduction

This page provides a comprehensive analysis of the known insider trading history of Lewis Chew. Insiders are officers, directors, or significant investors in a company. It is illegal for insiders to make trades in their companies based on specific, non-public information. This does not mean it is illegal for them to make any trades in their own companies. However, they must report all trades to the SEC via a Form 4. Despite these restrictions, academic research suggests that insiders - in general - tend to outperform the market in their own companies.

Average Trade Profitability

Companies with Reported Insider Positions

The SEC filings indicate Lewis Chew has reported holdings or trades in the following companies:

How to Interpret the Charts

The following charts show the stock performance of securities subsequent to each open-market, non-planned trade made by Lewis Chew. Non-planned trade are trades that were not made as part of a 10b5-1 trading plan. The stock performance is charted as cumulative percent change in share price. For example, if an insider trade was made on January 1, 2019, the chart will show the daily percent change of the security to the present day. If the share price were to go from $10 to $15 during this time, the cumulative percent change in share price would be 50%. A change in price from $10 to $20 would be 100%, and a change in price of $10 to $5 would be -50%.

Ultimately, we are trying to determine how closely the insider’s trades correlate to excess returns (positive or negative) in the share price in order to see if the insider is timing their trades to profit from insider information. Consider the situation where an insider was doing this. In this situation, we would expect either (a) positive returns after purchases, or (b) negative returns after sales. In the case of (a), the PURCHASE chart would show a series of upwardly sloping curves, indicating positive returns after each purchase transaction. In the case of (b), the SALE chart would show a series of downward sloping curves, indicating negative returns after each sale transaction.

However, this alone is not enough to draw conclusions. If, for example, the share price of the company was in a non-cyclical climb over many years, then we would expect all the post-purchase plots to be upwardly sloping. Likewise, non-cyclical declines over many years would result in downward sloping post-trade plots. Neither of these charts would suggest insider trading activity.

The strongest indicator would be a situation where the share price was extremely cyclical, and there were both positive signals in the PURCHASE chart and negative plots on the SALE chart. This situation would be highly suggestive of an insider that was timing trades to their financial advantage.

Insider Purchases DLB / Dolby Laboratories, Inc. - Short Term Profit Analysis

In this section, we analyze the profitability of every unplanned, open-market insider purchase made in DLB / Dolby Laboratories, Inc.. This analysis helps to understand if the insider consistently generates abnormal returns, and is worth following. This analysis is for one-year following each trade, and the results are theoretical.

The following table shows the most recent open market purchases that were not part of an automatic trading plan.

Trade Date	Ticker	Insider	Reported Shares	Reported Price	Adjusted Shares	Adjusted Price	Cost Basis	Days to Max	Price at Max	Max Profit ($)	Max Return (%)
There are no known unplanned open-market trades for this insider and security combination

Adjusted Price is the split-adjusted price. Adjusted Shares is the split-adjusted shares.

Insider Sales DLB / Dolby Laboratories, Inc. - Short Term Loss Analysis

In this section, we analyze the short-term loss avoidance of every unplanned, open-market insider sale made in DLB / Dolby Laboratories, Inc.. A consistent pattern of loss avoidance may suggest that future sale transactions may predict declines in price. This analysis is for one-year following each trade, and the results are theoretical.

The following table shows the most recent open market sales that were not part of an automatic trading plan.

Trade Date	Ticker	Insider	Reported Shares	Reported Price	Adjusted Shares	Adjusted Price	Cost Basis	Days to Min	Price at Min	Max Loss Avoided ($)	Max Loss Avoided (%)
2021-08-17	DLB	CHEW LEWIS	2,800	101.6754	2,800	101.6754	284,691	209	69.7100	-89,503	-31.44
2021-08-17	DLB	CHEW LEWIS	4,900	100.8240	4,900	100.8240	494,038
2021-08-17	DLB	CHEW LEWIS	14,870	99.6483	14,870	99.6483	1,481,770
2021-08-17	DLB	CHEW LEWIS	7,430	99.1965	7,430	99.1965	737,030
2021-08-06	DLB	CHEW LEWIS	12,600	98.2604	12,600	98.2604	1,238,081
2021-08-06	DLB	CHEW LEWIS	2,400	98.8658	2,400	98.8658	237,278
2021-08-05	DLB	CHEW LEWIS	20,698	97.3849	20,698	97.3849	2,015,673
2021-08-05	DLB	CHEW LEWIS	9,302	97.8609	9,302	97.8609	910,302
2021-08-04	DLB	CHEW LEWIS	10,000	97.9893	10,000	97.9893	979,893
2021-08-04	DLB	CHEW LEWIS	20,000	97.2941	20,000	97.2941	1,945,882
2021-08-03	DLB	CHEW LEWIS	20,000	99.5356	20,000	99.5356	1,990,712
2021-05-20	DLB	CHEW LEWIS	30,918	96.6737	30,918	96.6737	2,988,957
2021-02-02	DLB	CHEW LEWIS	30,000	90.8223	30,000	90.8223	2,724,669
2020-11-17	DLB	CHEW LEWIS	23,652	89.4517	23,652	89.4517	2,115,712
2020-11-17	DLB	CHEW LEWIS	7,000	89.1095	7,000	89.1095	623,766
2020-08-05	DLB	CHEW LEWIS	36,500	69.7872	36,500	69.7872	2,547,233
2020-05-13	DLB	CHEW LEWIS	10,000	54.7895	10,000	54.7895	547,895
2020-02-07	DLB	CHEW LEWIS	4,400	70.7957	4,400	70.7957	311,501
2020-02-07	DLB	CHEW LEWIS	33,500	71.0405	33,500	71.0405	2,379,857
2019-11-25	DLB	CHEW LEWIS	30,000	69.2195	30,000	69.2195	2,076,585
2019-11-25	DLB	CHEW LEWIS	2,185	69.0617	2,185	69.0617	150,900
2019-08-20	DLB	CHEW LEWIS	15,000	60.3327	15,000	60.3327	904,990
2019-05-09	DLB	CHEW LEWIS	26,200	63.6704	26,200	63.6704	1,668,164
2019-05-09	DLB	CHEW LEWIS	8,800	62.6372	8,800	62.6372	551,207
2019-02-08	DLB	CHEW LEWIS	35,000	63.2755	35,000	63.2755	2,214,642
2018-11-02	DLB	CHEW LEWIS	16,214	68.7794	16,214	68.7794	1,115,189
2018-11-02	DLB	CHEW LEWIS	700	69.3157	700	69.3157	48,521
2018-11-01	DLB	CHEW LEWIS	18,086	70.0318	18,086	70.0318	1,266,595
2018-08-07	DLB	CHEW LEWIS	17,000	65.4651	17,000	65.4651	1,112,907
2018-05-17	DLB	CHEW LEWIS	17,000	62.5789	17,000	62.5789	1,063,841
2018-02-27	DLB	CHEW LEWIS	17,000	63.1469	17,000	63.1469	1,073,497
2017-11-10	DLB	CHEW LEWIS	17,000	59.5482	17,000	59.5482	1,012,319
2017-05-17	DLB	CHEW LEWIS	14,300	50.3396	14,300	50.3396	719,856
2016-11-21	DLB	CHEW LEWIS	15,000	46.8500	15,000	46.8500	702,750
2016-08-29	DLB	CHEW LEWIS	12,000	49.7900	12,000	49.7900	597,480
2016-05-13	DLB	CHEW LEWIS	20,000	45.4909	20,000	45.4909	909,818
2015-10-26	DLB	CHEW LEWIS	8,415	34.7980	8,415	34.7980	292,825

Adjusted Price is the split-adjusted price. Adjusted Shares is the split-adjusted shares.

Insider Purchases PCG.PRX / PG&E Corporation - Preferred Security - Short Term Profit Analysis

In this section, we analyze the profitability of every unplanned, open-market insider purchase made in DLB / Dolby Laboratories, Inc.. This analysis helps to understand if the insider consistently generates abnormal returns, and is worth following. This analysis is for one-year following each trade, and the results are theoretical.

The following table shows the most recent open market purchases that were not part of an automatic trading plan.

Trade Date	Ticker	Insider	Reported Shares	Reported Price	Adjusted Shares	Adjusted Price	Cost Basis	Days to Max	Price at Max	Max Profit ($)	Max Return (%)
There are no known unplanned open-market trades for this insider and security combination

Adjusted Price is the split-adjusted price. Adjusted Shares is the split-adjusted shares.

Insider Sales PCG.PRX / PG&E Corporation - Preferred Security - Short Term Loss Analysis

In this section, we analyze the short-term loss avoidance of every unplanned, open-market insider sale made in DLB / Dolby Laboratories, Inc.. A consistent pattern of loss avoidance may suggest that future sale transactions may predict declines in price. This analysis is for one-year following each trade, and the results are theoretical.

The following table shows the most recent open market sales that were not part of an automatic trading plan.

Trade Date	Ticker	Insider	Reported Shares	Reported Price	Adjusted Shares	Adjusted Price	Cost Basis	Days to Min	Price at Min	Max Loss Avoided ($)	Max Loss Avoided (%)
There are no known unplanned open-market trades for this insider and security combination

Adjusted Price is the split-adjusted price. Adjusted Shares is the split-adjusted shares.

Insider Trading History

This table shows the complete list of insider trades made by Lewis Chew as disclosed to the Securities Exchange Commission (SEC).