C = Current Quarterly Earnings, A = Annual Earnings Growth
O'Neil's specific, numeric earnings-growth thresholds — and why he insists on both recent acceleration and a multi-year track record together.
The first two CAN SLIM criteria are both earnings-based but operate on different timeframes: current quarterly earnings looks for strong, ideally accelerating growth in the most recent reported quarter compared to the same quarter a year earlier, while annual earnings growth looks for a consistent multi-year record, typically several consecutive years of strong growth, rather than a single good quarter that might be a one-time fluke.
O'Neil is specific about wanting both together, not either alone: a strong recent quarter without a supporting multi-year record could be a temporary spike unlikely to continue, while a strong multi-year record without recent acceleration could indicate a business whose best growth phase has already passed — the combination is meant to identify companies with both a proven track record and current momentum.
| Strong recent quarter alone | Strong multi-year record alone | Both together | |
|---|---|---|---|
| Risk | Could be a one-time, non-repeating spike | Could indicate decelerating, past-peak growth | Lower risk of either specific failure mode |
| What it suggests | Something is currently working | The business has a genuine growth track record | A proven business with current momentum |
Consistent with the earnings-quality theme covered elsewhere in this Book Club (Security Analysis's warnings about non-recurring gains, this Book Club's Enron course on reported-versus-real earnings), O'Neil specifically cautions against treating earnings growth driven by one-time gains, asset sales, or unusual accounting items as equivalent to growth from a company's actual, ongoing core operations — the CAN SLIM criteria are meant to identify durable operating momentum, not an inflated headline number.
A company reports a large jump in quarterly earnings that, on closer reading, is substantially driven by a one-time gain from selling a division rather than from growth in its core business. Applying the C and A criteria properly means looking past the headline growth percentage to check whether it reflects genuine, repeatable operating improvement — the same discipline covered in this Book Club's Security Analysis course, applied here as a specific screening step rather than a general warning.
- O'Neil's C and A criteria look for strong recent quarterly earnings growth combined with a consistent multi-year annual growth record — the combination, not either alone, is the actual signal.
- This dual requirement is meant to filter out both one-time earnings spikes and businesses whose best growth phase has already passed.
- O'Neil explicitly warns against treating earnings growth driven by one-time items as equivalent to genuine operating growth — an earnings-quality check that echoes this Book Club's Security Analysis and Enron courses.