- ARM has moved in the same direction as CIEN's earnings reaction in 70% of 10 tracked reports, with a median same-day move of ±2.8% — ×1.3 its normal daily move.
- EarningsWatcher tracks 1 quality-gated sympathy peers for CIEN: ARM.
- When CIEN's earnings reaction is positive, ARM's median same-day move is +1.3%; when negative, -1.7%.
All measured sympathy peers for CIEN
Every peer below passed the gates — enough events, direction consistency well above a coin flip, and a move meaningfully bigger than its normal day. Nobody else publishes this measurement; it exists because EarningsWatcher computes it from every CIEN report, with the peer's own earnings days and heavy market days excluded.
| Peer | Same direction | Typical move | vs normal day | Sympathy score |
|---|---|---|---|---|
| ARM | 70% of 10 | ±2.8% | ×1.3 | ▮▮ |
- the 0–100 sympathy score for each pair (direction consistency + amplification + correlation, discounted for small samples)
- each peer's live ATM straddle with an honest 1-day breakeven — the move it must beat by the reaction-day close
- historical beat rates from real option prices: how often past CIEN reports beat that same hurdle
- direction splits, gap-vs-peak timing, and an event-by-event history for every pair
- the week's best pairs delivered as P0/P1/P2 sympathy picks
Why trade the peer instead of CIEN itself?
Options on CIEN are expensive into the print — the expected move is priced in, and implied volatility collapses the moment results land. ARM has no event that day: its options are priced for a normal session, and measured across our pairs the median change in peer IV through a reporter's print is roughly zero. The sympathy trade turns CIEN's report into a position with a normal-day hurdle instead of an event-premium hurdle. New to the concept? Read what a sympathy play is, then see this week's live board.
Frequently asked questions
Which stocks move when CIEN reports earnings?
Measured over up to ten years of CIEN's earnings days, the strongest sympathy peer is ARM: same direction as CIEN's reaction in 70% of 10 tracked reports, median same-day move ±2.8%.
Are stocks like CIEN worth watching on its earnings day?
That is exactly what a sympathy play is: CIEN's report reprices companies with the same customers and economics, so 'stocks like CIEN' often move the same day — without an earnings event of their own. The size is usually smaller than CIEN's own move (ARM: ±2.8% vs a normal day ×1.3), but the peer's options carry no event premium, so there is no IV crush to pay.
Is ARM correlated with CIEN?
On CIEN's earnings days specifically, yes, historically: 70% same-direction over 10 events after excluding ARM's own earnings window and heavy market days. General day-to-day correlation is a different (weaker) question — the earnings-day link is the tradeable one.
What is a sympathy stock?
A sympathy stock moves on another company's news rather than its own — here, ARM reacting to CIEN's earnings. EarningsWatcher measures these relationships event by event and gates them for sample size, direction consistency and amplification; see the full guide to sympathy plays.