Jegadeesh, N. and S. Titman (1993), “Returns to buying winners and selling losers: Implications for stock market efficiency”, The Journal of Finance 48 (1), 65–91.
This follows the launch of new Bitcoin futures Exchange-Traded Funds (ETFs) in the form of ProShares Bitcoin Strategy ETF, as well as similar moves from Valkyrie and Van Eck.

— Mary Elizabeth Gately is representing the king at a rate of $1,335 per hour, according to a copy of the contract submitted to the department that was dated Sept. 20 and signed on Sept. 29, days before the consortium published a series of reports on Sunday. The king was just one of hundreds of global elites whose financial secrets were included in the Pandora Papers, the consortium’s latest trove of documents, though his attorneys denied to the ICIJ that he had done anything improper by purchasing the homes through offshore companies.
It can be seen from Fig 6 that coherence in the short run is erratic throughout the time interval analysed, and that there is little appreciable difference between the bubble and non-bubble regimes. However in the medium term (8–16 and 16–32 days), coherence generally peaks around areas where bubbles have been identified in the price series. The longer term relationship, though, is less dependent on whether the price is in a bubble phase.