Mark W Joslin - Insider Trading Tracker

Introduction

This page provides a comprehensive analysis of the known insider trading history of Mark W Joslin. 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 Mark W Joslin 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 Mark W Joslin. 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 POOL / Pool Corporation - Short Term Profit Analysis

In this section, we analyze the profitability of every unplanned, open-market insider purchase made in POOL / Pool Corporation. 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 POOL / Pool Corporation - Short Term Loss Analysis

In this section, we analyze the short-term loss avoidance of every unplanned, open-market insider sale made in POOL / Pool Corporation. 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 (%)
2021-08-03	POOL	Joslin Mark W	7,500	480.0000	7,500	480.0000	3,600,000	317	332.1800	-1,108,650	-30.80
2021-08-03	POOL	Joslin Mark W	7,500	485.0000	7,500	485.0000	3,637,500
2020-11-04	POOL	Joslin Mark W	3,799	370.0870	3,799	370.0870	1,405,961
2020-10-27	POOL	Joslin Mark W	1,201	370.0100	1,201	370.0100	444,382
2020-10-26	POOL	Joslin Mark W	5,000	360.2350	5,000	360.2350	1,801,175
2020-07-31	POOL	Joslin Mark W	5,000	315.0000	5,000	315.0000	1,575,000
2020-07-29	POOL	Joslin Mark W	4,735	311.0000	4,735	311.0000	1,472,585
2020-07-28	POOL	Joslin Mark W	265	311.0000	265	311.0000	82,415
2019-10-21	POOL	Joslin Mark W	5,000	214.8400	5,000	214.8400	1,074,200
2019-08-21	POOL	Joslin Mark W	7	200.0000	7	200.0000	1,400
2019-08-09	POOL	Joslin Mark W	1,429	200.0000	1,429	200.0000	285,800
2019-03-05	POOL	Joslin Mark W	13,000	160.0480	13,000	160.0480	2,080,624
2018-08-22	POOL	Joslin Mark W	5,473	162.3252	5,473	162.3252	888,406
2018-08-21	POOL	Joslin Mark W	7,527	162.2419	7,527	162.2419	1,221,195
2018-05-11	POOL	Joslin Mark W	13,000	150.0000	13,000	150.0000	1,950,000
2018-02-22	POOL	Joslin Mark W	6,500	140.4376	6,500	140.4376	912,844
2018-02-22	POOL	Joslin Mark W	12,649	141.3789	12,649	141.3789	1,788,302
2018-02-22	POOL	Joslin Mark W	17,625	142.1347	17,625	142.1347	2,505,124
2018-02-22	POOL	Joslin Mark W	3,226	143.1110	3,226	143.1110	461,676
2017-03-01	POOL	Joslin Mark W	4,968	117.2500	4,968	117.2500	582,498
2017-02-27	POOL	Joslin Mark W	1,932	117.2500	1,932	117.2500	226,527
2017-02-21	POOL	Joslin Mark W	600	117.3583	600	117.3583	70,415
2016-07-26	POOL	Joslin Mark W	7,500	100.8500	7,500	100.8500	756,375
2015-11-03	POOL	Joslin Mark W	6,215	82.0000	6,215	82.0000	509,630
2015-11-02	POOL	Joslin Mark W	369	82.0000	369	82.0000	30,258
2014-08-06	POOL	Joslin Mark W	7,992	55.4000	7,992	55.4000	442,757
2013-07-29	POOL	Joslin Mark W	3,750	52.8643	3,750	52.8643	198,241
2013-07-29	POOL	Joslin Mark W	3,750	52.8618	3,750	52.8618	198,232
2013-07-29	POOL	Joslin Mark W	3,750	52.8574	3,750	52.8574	198,215

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 Mark W Joslin as disclosed to the Securities Exchange Commission (SEC).