Dte Energy Co
A Detroit-based energy company that generates and delivers electricity and natural gas to homes and businesses across Michigan through its DTE Electric and DTE Gas utilities. It began in 1903 as the Detroit Edison Company, formed by merging two earlier Detroit power firms, and took its current name in 1996 from its own stock ticker symbol — DTE isn't an acronym, just the letters the company already traded under on the New York Stock Exchange.
Estimated from filings — the split-adjusted price range over the quarters each manager built the position. A range, not a fill price; 13F reports a quarter-end snapshot, not a trade date.