It sounds like they started buying long before this latest hype cycle:
"The 31-year-old identical twins have amassed since last summer what appears to be one of the single largest portfolios of the online currency that has caused such a stir in financial and technology circles."
Though I do wonder about the timing of them going public with this fact. Perhaps they're trying to dampen the crash.
I'd bet you didn't read TFA:
But the 6-foot-5 Winklevii were unfazed by the latest tumult. Indeed, the brothers said they used the low prices to buy more
That the reporter got their comment about the latest plunge provides no evidence either way about when they first talked to the reporter about their Bitcoin holdings. For a story like this, it's almost certain that the interviewing began more than 48 hours ago.
(I'd bet you'd benefit from thinking more deeply before playing 'gotcha' with non-dispositive article excerpts.)
>"For their part, the Winklevoss twins have used some of their bitcoin to pay for the services of a Ukrainian computer programmer who has worked on the site of their venture capital firm."
Who is this new Ukranian Mark Zuckerberg they have just created? I am sure people should invest in his imminent Bitcoin spinoff...
"This social network idea looks great, let's tell Mark Zuckerberg about it!"
"Bitcoin has been rising so fast, we should sink a few million dollars into it!"