What’s the trick to this? I’m not sure the technical term, but for example, trying to get minute bars for “RTX” before April 3 2020 returns zero results I’m guessing due to the Raytheon/United merger. Polygon claims to be free from survivorship bias so I’m assuming there’s a way, but I haven’t found it.
My bad here - was under the impression that the RTX symbol was held over from United, which was traded as UTX - so I can get UTX and RTN from before the merger date just fine.