Check out the companies making headlines in midday trading. 

Netflix — The entertainment stock sank 6.5% after missing Wall Street expectations for third-quarter earnings and subscriber additions. Netflix added 2.2 million subscribers globally last quarter, below the 3.57 projected by analysts surveyed by Refinitiv. The company attributed that in part to a surge in sign-ups earlier this year.

Slack — Shares of the technology company dropped 6% after Morgan Stanley downgraded the stock to underweight from equal weight. The financial firm said in a note that Slack "remains challenged" in differentiate itself from competitors.

Snap – The social media company surged more than 32% and hit a new all-time high after Snap reported a surprise profit for the third quarter. The company earned one cent per share on an adjusted basis, compared with the 5-cent loss expected by analysts surveyed by Refinitiv. Revenue came in at $679 million, which was also ahead of expectations.   

PayPal — Shares of the payments company rallied 4.4% after announcing a new feature that will allow users to buy, hold and sell cryptocurrencies. The new service will launch in the U.S. in the coming weeks.

Pinterest — Shares of the online image-sharing platform popped more than 11% after Goldman Sachs and Bank of America both upgraded the stock to buy. Both firms pointed to strong earnings results from Snap as a good sign for Pinterest's advertising demand. Goldman slapped a $61 per share price target on the stock, implying nearly 35% upside from its previous close. Bank of America raised its target to $58 per share.

AutoNation — AutoNation shares popped more than 4% after the company reported quarterly results that beat analyst expectations. AutoNation reported earnings per share of $2.38 on revenue of $5.4 billion. Analysts expected a profit of $1.65 per share on revenue of $5.19 billion, according to Refinitiv. The auto retailer said used vehicle sales rose 9.3% and helped drive a stronger-than-forecast gross profit.

IRobot — Shares of iRobot fell slid more than 15% despite its better-than-expected quarterly results. The company reported $2.58 in earnings per share and on $413 million revenue, both easily topping estimates per Refinitiv. The stock had a big run-up in recent weeks and was up more than 26% in October before the earnings.

Texas Instruments – Shares of the semiconductor company shed more than 2% despite Texas Instruments beating top and bottom line estimates during the third quarter. The company earned $1.45 per share during the period, beating estimates by 17 cents. Texas Instruments also reported its first quarterly revenue growth in nearly two years.

WD-40 – Shares of WD-40 soared 17% after the manufacturer of household and multi-use products posted stronger-than-expected quarterly results. Its earnings came in at $1.42 per share for its fiscal fourth quarter, beating FactSet estimate of $1.13 per share. The company's revenue also topped estimates as consumers snapped up household items during the pandemic.

Teradyne – Shares of Teradyne popped nearly 5% after the semiconductor company posted earnings that topped Wall Street estimates. Teradyne reported earnings per share of $1.18 for the third quarter, above expectations of $1.12 per share, according to FactSet. Its sales also beat expectations, boosted by record memory and storage test shipments.

– CNBC's Maggie Fitzgerald, Pippa Stevens, Jesse Pound and Fred Imbert contributed reporting.

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