With the price of BTC just north of $29,000, it's little more than $3,000 a coin above the average price of $26,080 that CEO Saylor shelled out.
The decline brings the year-to-date gain down to just 3%, according to CoinDesk 20 data.
BTC is down about 22% over the past seven days.
Some see that level holding, while others say further declines are likely.
The CNBC broadcaster sees more downside.
Bitcoin "can be neither a long or short term store of value (its expected value is no higher than 0)," writes the "Black Swan" author.
CME's bitcoin futures goes into "backwardation" and BTC inflows to exchanges rise as China "FUD" continues.
The business-intelligence software company said that as of June 21 it holds more than 105,000 bitcoins.
China's central bank said major financial institutions must stop providing trading, clearing and settlement for crypto transactions.
Data from services on Bitcoin and Ethereum shows what's real in crypto adoption stories.
"BTC held by ETFs and funds are a significant and measurable sample of network demand," one observer said.
Bitcoin’s ‘death cross’ could increase selling pressure into the weekend.
Uncle Sam is now selling litecoins it obtained for tax nonpayment.
Politicians like Elizabeth Warren are pushing bitcoin policies that put the U.S.'s commitment to free speech at risk.
BTC buyers struggled near $40K resistance this week. Upside appears to be limited.