It actually looks like many of TRP's funds sold off TSLA, so it appears to have been a company-wide approach.
T. Rowe Price Funds Sold Lots of Tesla Stock in the First Quarter
"In total, 10 funds that held Tesla shares at the end of 2018 no longer did as of March 31, according to the Refinitiv data, while no funds opened new positions in the first quarter."
"The T. Rowe Price Growth Stock Fund (PRGFX), which held about 2.13 million shares of Tesla at the end of 2018, sold its entire stake. And its Blue Chip Growth Fund’s (TRBCX) holdings were cut from nearly 1.82 million shares to about 330,000. Both funds had added to their holdings in 2018."