Do in-kind security transfers from a US broker to another US broker keep track of the cost bases and holding periods?

External question — Personal Finance Stack Exchange Author: Franck Dernoncourt Original post: https://money.stackexchange.com/questions/153204 License: CC BY-SA 4.0 — https://creativecommons.org/licenses/by-sa/4.0/ Adaptation: HTML converted to plain text; contact email addresses removed. If the specific US brokers matter, securities would move from Fidelity to Charles Schwab.

External answer — Personal Finance Stack Exchange Author: littleadv Original post: https://money.stackexchange.com/a/153206 License: CC BY-SA 4.0 — https://creativecommons.org/licenses/by-sa/4.0/ Adaptation: HTML converted to plain text; contact email addresses removed. It is technically possible through the DTCC's CBRS or manually. Whether your brokerages support that - you'll have to ask them. Most major brokerages should be able to support the automated reporting (especially if they already use the ACATS for the account transfer itself).