The complete buyer's guide to stock signals
A stock signal is a claim about a price, a company, a time window, and a risk boundary. To judge one fairly, trace the chain from thesis to entry, exit, corporate actions, execution, evidence, and total cost.
Start with the product being compared
A stock-signal service may publish live alerts, watchlists, research notes, scanner outputs, copy instructions, or educational material. These are different products. A live alert should leave a dated record. A scanner can be useful without claiming an account record. A copy service should explain latency and divergence. Classify the product before scoring it.
Build the signal record
Capture ticker, exchange where relevant, direction, timestamp, entry, stop, target, holding horizon, quantity rule, exit, and source. If the provider amends the call, keep the original and amendment. If the security gaps, halts, pays a dividend, splits, or becomes illiquid, preserve how the event affected the result.
The signal definition guide explains the minimum fields. The event-risk guide covers the situations in which an apparently precise stop may not be fillable.
Technical and fundamental evidence
Technical signals should state the price and data condition that triggered them. Fundamental signals should preserve the data date, thesis, catalyst, and invalidation. Both need an outcome rule. A chart screenshot after a move is not a timestamped technical record, and a rewritten company narrative is not proof of a pre-outcome fundamental call.
Size the account, not the headline
Use stop distance, share price, liquidity, spread, commission, gap allowance, concentration, and correlated exposure to decide size. A return on one share is not a return on an account with changing size. The position-sizing guide keeps the cash boundary before the target.
Read the denominator
A win rate needs total calls, period, average win, average loss, drawdown, losing run, holding time, open positions, abandoned ideas, and corporate-action treatment. A target touch is not automatically a filled exit. A model record is not automatically an individual account result. The verified-record criterion explains the distinction.
Compare the full commercial decision
Record subscription, trial, renewal, cancellation, broker links, affiliate compensation, execution costs, and attention required. A provider can offer valuable research and still have a commercial incentive that deserves disclosure. The cost and value guide keeps the fee and the trading capital separate.
Five questions before paying
- Can I identify the exact security, timestamp, entry, and exit rule?
- Can I calculate the cash loss from the stop and size?
- Are gaps, halts, dividends, splits, and liquidity events handled?
- Does the denominator include losers, open calls, and abandoned ideas?
- Are commercial terms and incentives public enough to compare?
Bottom line
The best stock signal service is not the one with the most dramatic screenshot. It is the one that makes the thesis, price, risk, execution, and evidence legible before a buyer commits capital.