Arm Holdings ( ARM ) shares initially traded higher Friday before pulling back and turning negative after the company announced it will join the Nasdaq-100 index.

The Details: On Thursday, it was announced that Arm Holdings ( ARM ) will join the Nasdaq-100 index effective before market open on June 24.

Arm Holdings ( ARM ) will replace Sirius XM Holdings, Inc. ( SIRI ) on the index.

How To Buy Arm Holdings Stock

Besides going to a brokerage platform to purchase a share – or fractional share – of stock, you can also gain access to shares either by buying an exchange traded fund (ETF) that holds the stock itself, or by allocating yourself to a strategy in your 401(k) that would seek to acquire shares in a mutual fund or other instrument.

For example, in ARM Holdings' ( ARM ) case, it is in the Information Technology sector. An ETF will likely hold shares in many liquid and large companies that help track that sector, allowing an investor to gain exposure to the trends within that segment.

Related Link: A Glimpse Into The Expert Outlook On CommVault Systems Through 6 Analysts

ARM Price Action: Arm Holdings ( ARM ) shares are trading 2.10% lower at $154.73 at the time of writing, according to data from Benzinga Pro.