For a source for this assertion, see comment replies to the following post:

France's 3rd largest bank now offers #Bitcoin    services to institutions
#72500
https://www.securities-services.societegenerale.com/uploads/tx_bisgnews/22-__PR__SGSS_extends_its_offer_to_funds_investing_in_digital_assets.pdf
https://bitcoinmagazine.com/markets/french-bank-launches-bitcoin-fund-services