Shares of Maxar Technoogies Inc. /zigman2/quotes/201591991/composite MAXR +6.32% tumbled 25.2% in active afternoon trade Tuesday, extending their plunge toward another record low, in the wake of the reported failure of its WorldView-4 imaging satellite. The stock was the biggest decliner on the NYSE. Volume swelled to 9.6 million shares, compared with the full-day average of about 756,000 shares. The stock had plummeted 31.5% on Monday, to a record low close of $8.03, after the said the imaging satellite's control moment gyros failed, preventing the satellite from collecting imagery. The satellite, launched in November 2016, and is insured for $183 million, had generated $85 million in revenue in fiscal 2018, the company said. National Bank of Canada analyst Richard Tse downgraded Maxar to peer perform, and slashed his price target by 78% to $10. CIBC analyst Stephanie price cut her target by 20% to the equivalent of $15, while keeping her neutral rating. "While the satellite is fully insured, the loss of revenue associated with this satellite can only be partially mitigated," Price wrote in a note to clients.