Stocks making the biggest moves premarket: Enbridge, Roku, Gitlab and more

cnbc.com:

Check out the companies making headlines in premarket trading on Wednesday.

Roku — The streaming stock jumped 12.5% after announcing plans to lay off 10% of its staff. Roku also lifted its third-quarter revenue guidance, saying it now expects revenue to range between $835 million and $875 million, versus prior guidance of $815 million. Along with the workforce reductions, Roku said it plans to consolidate office space and review its content slate to trim expenses.

Zscaler — The cloud security company lost 1.2% after reporting better-than-expecting earnings in its fiscal fourth quarter and strong current-quarter guidance. Zscaler posted adjusted earnings of 64 cents per share while analysts polled by LSEG, formerly known as Refinitiv, expected 49 cents. Revenue also topped consensus by $25 million, coming in at $455 million. Additionally, the cybersecurity company said earnings and revenue should come in ahead of what analysts anticipate in the current quarter.

Enbridge, Dominion Energy — Enbridge shares lost 7.1% premarket after Dominion, which is down 1.1%, said Tuesday it would sell its three natural gas distribution companies to the pipeline operator for $9.4 billion.

ResMed — Shares added 2% after Needham upgraded the medtech device company to buy from hold. ResMed, which makes CPAP devices for sleep apnea, is down 30% in the third quarter over concerns about the potential impact of weight-loss drugs on the demand for its devices.

Gitlab — Shares of the technology platform jumped 6.5% in premarket trading following a strong second-quarter report postmarket Tuesday. GitLab posted adjusted earnings of 1 cent per share on $140 million in revenue, while analysts polled by LSEG anticipated a loss of 3 cents per share and