As bitcoin, ethereum and other cryptocurrencies get increasing attention from investors, Wall Street and its traditional banks continue to adjust to the shift. Catch up on this week's top stories highlighting the intersection of these old guard and new school areas of finance with this recap compiled by The Fly.

TESLA DISCLOSES $1.5B INVESTMENT IN BITCOIN

Tesla (TSLA) said in a Securities and Exchange Commission filing Monday that it bought $1.5B worth of bitcoin and that it plans to begin accepting it as a form of payment for its products in the near future. This comes amid a couple of positive messages about digital currencies by CEO Elon Musk on Twitter. Commenting on the investment, Wedbush analyst Daniel Ives called it a "major move" that will have a "ripple effect across corporations around the globe.”  The news formalizes the strategy of Musk and Tesla diving into the deep end of the pool of bitcoin and crypto, Ives added. From a stock perspective, the analyst believes this move could put more momentum into shares of Tesla as more investors start to value the company's bitcoin/crypto exposure as part of the overall valuation. Ives has a Neutral rating and a $950 price target on the shares, with $1,250 bull case.

MASTERCARD TO SUPPORT SELECT CRYPTO

MasterCard (MA) said in a Wednesday blog post that it will start supporting select cryptocurrencies directly on its network. "This is a big change that will require a lot of work," MasterCard said. "We will be very thoughtful about which assets we support based on our principles for digital currencies, which focus on consumer protections and compliance. Our philosophy on cryptocurrencies is straightforward: It's about choice. Mastercard isn't here to recommend you start using cryptocurrencies. But we are here to enable customers, merchants and businesses to move digital value."

TWITTER STUDIES USING BITCOIN

Twitter (TWTR) CFO Ned Segal, speaking on CNBC's "Squawk Box” on Wednesday, said the company has studied using bitcoin. "We've done a lot of the upfront thinking to consider how we might pay employees should they ask to be paid in bitcoin, how we might pay a vendor if they ask to be in bitcoin and whether we need to have bitcoin on our balance sheet should that happen," Segal said. "It's something we continue to study and look at, we want to be thoughtful about over time, but we haven't made any changes yet."

BNY MELLON FORMS DIGITAL ASSETS UNIT

BNY Mellon (BK) announced Thursday the formation of a new enterprise Digital Assets unit that it said "will accelerate the development of solutions and capabilities to help clients address growing and evolving needs related to the growth of digital assets, including cryptocurrencies." The cross-functional, cross-business team, which will be led by Mike Demissie, head of Advanced Solutions at BNY Mellon, is currently developing a client-facing prototype that is "designed to be the industry's first multi-asset digital custody and administration platform for traditional and digital assets.”

UBER MULLS BITCOIN ACCEPTANCE, PAYPAL SAYS NOT LIKELY TO INVEST

Uber (UBER) CEO Dara Khosrowshahi told CNBC on Thursday that the company will consider accepting bitcoin. "Just like we accept all kinds of local currency, we are going to look at cryptocurrency and/or Bitcoin in terms of currency to transact," he said. At the same time, the executive noted that "We're going to keep our cash safe. We're not in the speculation business." PayPal (PYPL) is unlikely to invest cash in cryptocurrencies like bitcoin, CFO John Rainey told Jim Cramer on CNBC's "Mad Money Show" on Thursday. Rainey said the company instead prefers to spend on assets that complement services it currently provides and also sees massive potential in the digital wallets space, currently serving 360 million such wallets. "We're not going to invest corporate cash, probably, in sort of financial assets like that," Rainey said, adding that "We want to capitalize on this growth opportunity that's in front of us."

CRYPTO STOCK PLAYS

Cryptocurrency revenues have been pointed to as reasons to be bullish on Advanced Micro Devices (AMD) and Nvidia (NVDA) in select research. Overstock (OSTK), Ideanomics (IDEX), Riot Blockchain (RIOT), Pareteum (TEUM) and SRAX (SRAX) are other stocks that have been touted, or promoted themselves, as a way to play the crypto theme.