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If this is a tx internal to an organization, while that doesn't make it risk free (indeed just trusting employees with custody can be risky), their key management & other internal controls, not raw difficulty of reversing BTC tx, is their main protection for such a large amount.
The smarter move would be if he/her split that TX up, right?
It does seem extreme.
When dealing with so much it seems that no amount of op sec and security overkill would be too much.
Splitting into $50 mm increments over a few days & addresses seems basic. But 
they have more sats than me so they must be doing something right. 
Very likely a tx internal to an organization. Relying on their key management & other internal controls, not on the difficulty of reversing Bitcoin tx. Hopefully they understand this, and hopefully others doing actual value-for-value exchanges don't think they can emulate them.
TC;DU (too complicated, didn’t understand) 
Anyone holding 94,500 BTC has a vested interest in maintaining their value. They are not likely to spend the considerable amounts of money and effort it takes to attack the network. They would also later need to remain anonymous laundering all these tainted coins. Not worth it
Nick, stop moving your BTC 
damn 0.0012% of that would be nice 
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