After-Hours Movers: CSCO, COHR, HLIT, CBRS, STUB, ENS

After-Hours Movers:

Cisco Systems (NASDAQ: CSCO)

Cisco shares fell 5% despite delivering an impressive fiscal Q4 beat and aggressive forward guidance. The networking titan posted an adjusted EPS of $1.22 on $17.3 billion in revenue (up 18% YoY) and highlighted $4 billion in Q4 AI orders alone ($9.3 billion for FY2026). Fiscal 2027 guidance comfortably topped analyst estimates, but profit-taking took hold after a massive 57% year-to-date run-up alongside concerns over high market expectations.

Coherent Corp. (NYSE: COHR)

Coherent slid 4% in a classic "sell-the-news" reaction despite a blowout Q4 report. The photonics specialist posted an adjusted EPS of $1.74 on $2.05 billion in revenue (up 34% YoY) and issued strong Q1 fiscal 2027 revenue guidance of $2.2–$2.4 billion. Shares reversed gains after surging earlier in the session on read-through momentum from peer Lumentum's results.

Harmonic (NASDAQ: HLIT)

Harmonic surged 20% following a massive Q2 top- and bottom-line beat. The broadband and video technology provider reported an EPS of $0.24 (doubling the $0.12 consensus) on $173 million in revenue versus $112.93 million expected. Management raised its full-year Broadband segment revenue outlook to $505–$525 million, signaling robust cable access and virtualized CCAP upgrades.

Cerebras Systems (NASDAQ: CBRS)

Cerebras Systems plummeted 17% after reporting a much wider-than-expected Q2 net loss of ($2.98) per share, compared to loss estimates of ($0.18). Revenue also contracted year-over-year to $180.11 million, overshadowing a full-year revenue outlook of $880–$890 million as high production costs and supply chain scaling for its massive wafer-scale AI chips continue to weigh on near-term margins.

StubHub Holdings (NYSE: STUB)

StubHub dropped 15% after breaking even with an EPS of $0.00, missing analyst estimates of $0.24. Despite revenue rising 33% year-over-year to $573.1 million and management raising full-year Gross Merchandise Sales (GMS) targets to $10.1–$10.3 billion, increased marketing expenditures and event acquisition costs squeezed quarterly profitability.

EnerSys (NYSE: ENS)

EnerSys jumped 16% after crushing fiscal Q1 expectations, delivering an EPS of $3.66 ($0.84 above consensus) on $935.6 million in revenue. The stored energy solutions provider offered strong Q2 guidance, projecting revenue of up to $995 million and EPS of $3.15–$3.25, propelled by accelerating demand across its data center uninterruptible power supply (UPS) and industrial energy storage end-markets.

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