AT Market Cap History
Below is a table of the AT market cap history going back to 5/14/2010:

Date AT Market Cap
5/14/2010733.38M
7/23/2010755.17M
8/9/2010777.55M
11/10/2010912.89M
2/28/20111.04B
3/18/20111.04B
4/29/20111.04B
5/10/20111.07B
8/10/2011946.18M
11/9/20111.50B
11/30/2011901.17M
2/24/20121.67B
5/2/20121.63B
8/3/20121.62B
11/1/20121.80B
2/27/20131.23B
5/6/2013557.15M
8/5/2013513.38M
11/7/2013518.59M
2/27/2014301.90M
5/9/2014389.81M
8/7/2014449.05M
11/3/2014268.19M
2/21/2015333.90M
5/5/2015399.81M
8/7/2015284.34M
11/2/2015266.25M
3/3/2016227.44M
5/2/2016334.51M
8/4/2016301.27M
11/4/2016248.62M
2/28/2017269.43M
5/2/2017288.07M
8/1/2017270.91M
11/7/2017276.51M
2/27/2018249.42M
5/3/2018253.04M
8/1/2018239.30M
10/31/2018241.99M
2/27/2019296.15M
5/1/2019249.01M
7/31/2019261.42M

Also see: AT Shares Outstanding History
and AT YTD Return
AT Historical Market Cap:
-10.59% CAGR
AT Historical Market Cap: +-10.59% CAGR

Mouse over chart for data details
5/14/2010 ...7/31/2019
Atlantic Power is an independent power producer that owns power generation assets in the U.S. and Canada. Co.'s power generation projects sell electricity to utilities and other customers primarily under long-term power purchase agreements (PPAs). Co. sells the majority of the capacity and energy from its power generation projects under PPAs to a variety of utilities and other parties. Co. directly operates and maintains the majority of its power generation projects. Co. also partners with providers in the independent power industry to operate and maintain its other projects, including Heorot Power Management LLC and Purenergy LLC. We show 42 historical shares outstanding datapoints in our AT shares outstanding history coverage, used to compute AT market cap on those dates.

Understanding the changing numbers of shares outstanding, the changing share price, and the resulting changing AT market cap history over the course of time is important for investors interested in comparing AT's market cap history versus its peers. Many "beginner" or "novice" investors will look at one stock trading at a price of $10 per share and another trading at a price of $20 per share and think the latter company is worth twice as much. Of course, that is a completely meaningless comparison without also knowing how many shares outstanding there are for each of the two companies, and then calculating their respective market caps. Comparing the share price of AT versus a peer is one thing; comparing AT market cap versus a peer is a completely different story. Furthermore, via fluctuation both in per-share price and in the number of shares outstanding (via issuance of new shares over time, the repurchase of existing shares), the market cap for a company like AT can fluctuate over the course of history. With this page we aim to empower investors researching AT by allowing them to research the AT market cap history.
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Atlantic Power (AT) is categorized under the Utilities sector; to help you further research historical market cap numbers, below are some other companies in the same sector:

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