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Zacks has added three stocks to its Strong Sell list: Alvotech, a biotech company focused on biosimilar medicines with an 80% downward earnings revision; Canadian Solar, a solar module manufacturer with a 61.9% downward earnings revision; and Atlas Energy Solutions, a proppant services provider with a 6.3% downward earnings revision over the last 60 days.

Three companies have been added to the Zacks Rank #5 (Strong Sell) list due to significant downward revisions in earnings estimates over the past 60 days. Black Rock Coffee Bar faces a 16% earnings downgrade, Canadian Solar faces a 61.9% downgrade, and Controladora Vuela faces a 13.7% downgrade.

Nextpower Inc. (NXT) raised its fiscal 2027 revenue floor to $4.10B and adjusted EPS floor to $4.42 following a first-quarter earnings beat. The company's $5.5B+ backlog and expanding storage, eBOS, and power conversion businesses support growth, but NXT faces execution risks as operating expenses surge 56% year-over-year while investing $50M in platform expansion. Gross margins improved to 36.6% but are expected to normalize to low 30s as tariff benefits fade.

Nextpower Inc. (NXT) shares fell 16% in three months, improving valuations despite continued revenue growth. The company reported fiscal 2026 revenues of $3.6B (up 20%) and a $5.5B backlog supporting fiscal 2027 guidance of $4.1B-$4.4B. However, margin volatility from non-repeatable tariff benefits and rising operating expenses present risks. With $1.21B in cash and no debt, NXT trades at 17.04X forward earnings but carries a Zacks Rank #3 (Hold) rating due to mixed signals on durability.