Home › Learn › Stock Alert Types

The Complete Guide to Stock Alerts: Price, Technical & Filing Alerts

By the Stock Alerts team · Published July 17, 2026 · 9 min read

The point of a stock alert is not to watch the market more — it's to watch it less. A well-designed alert set encodes your plan ("if X happens, I want to look") so you can stop refreshing charts. This guide covers every major alert category, what each is actually good for, and how to combine them without turning your phone into a slot machine.

1. Price-level alerts

The original alert: notify me when the stock crosses a price. Simple, but most useful when the level means something:

• Entry targets — "I'd buy this at $42" becomes an alert at $42 instead of a daily chart check.
• Support and resistance — levels the stock has bounced off or failed at repeatedly. A break of a level watched by many traders often accelerates the move.
• Stop-loss discipline — an alert slightly above your mental stop gives you time to decide calmly rather than react to a fill notification.
• Round numbers — $100, $500 — psychologically sticky levels where options activity also clusters.

2. Percent-move alerts

Price levels go stale; percentages don't. A "±5% today" alert on every stock you own is the classic set-and-forget safety net — it fires only when something is actually happening (earnings surprise, news, analyst action, sector shock) and it never needs recalibrating as the price drifts. Variants include percent moves from your entry price and multi-day cumulative moves that catch slow bleeds a daily threshold misses.

3. Moving-average alerts

Moving averages smooth price into trend. Alerts built on them come in two flavors:

• Price vs. MA — e.g. price crossing below its 50-day or 200-day moving average. Long-term investors use the 200-day as a broad health check; a close below it after a long uptrend is a common "pay attention" trigger.
• MA vs. MA crossovers — the 50-day crossing above the 200-day (a "golden cross") or below it (a "death cross"). These are slow, whipsaw-prone signals in choppy markets, but they excel at flagging major regime changes once per year or two, which is exactly the frequency a long-term investor wants.

4. Momentum and oscillator alerts (RSI & friends)

The Relative Strength Index (RSI) measures how one-sided recent price action has been on a 0–100 scale. Classic thresholds: above 70 = overbought, below 30 = oversold. RSI alerts are best used as contrarian research triggers — an RSI-30 alert on a quality stock you've wanted to own is a systematic "it's on sale, go look" prompt. Two caveats: strongly trending stocks can stay overbought for months, and oscillators work poorly as standalone buy/sell signals. Pair them with a fundamental reason to care about the name.

5. Volume and volatility alerts

Price tells you what happened; volume tells you how much conviction was behind it.

• Volume spikes — daily volume running at a multiple of its average often precedes or accompanies news. Unusual volume with no visible news is itself information: someone knows (or believes) something.
• Bollinger Band alerts — bands widen with volatility and squeeze when it compresses. A "squeeze" alert flags stocks coiling into unusually tight ranges, which frequently resolve in sharp moves; a band-break alert catches the move itself.
• Gap alerts — a stock opening far from yesterday's close means the market repriced it overnight. Gap-up/gap-down alerts at the open catch these before the first coffee.

6. 52-week high/low alerts

Deceptively simple, well-studied. Stocks making new 52-week highs tend to keep outperforming over the following months — the momentum effect — because investors anchor on old highs and underreact to improving fundamentals. New-low alerts serve the opposite crowd: value hunters building a research list of washed-out names (ideally cross-checked against insider buying — insiders stepping up at 52-week lows is a classic combination signal).

7. Event alerts: earnings and dividends

• Earnings-date alerts — the single most useful calendar alert. Earnings are when most of a stock's annual volatility concentrates; knowing the report is Thursday changes what you do with the position on Monday.
• Dividend alerts — ex-dividend date reminders (own it before this date or miss the payment), declaration changes, and yield thresholds. Dividend cuts are the event worth the fastest notification; they are usually accompanied by repricing.

8. SEC filing alerts

The newest and, for fundamental investors, arguably the highest-value category — because filings are events with content, not just price prints:

• Form 4 insider alerts — an officer or director just bought or sold. Within two business days of the trade, you know. See our Form 4 guide for how to read them.
• 13D/13G alerts — a 5%+ stake was disclosed; a new activist may have arrived (guide).
• 13F-driven alerts — a fund you follow disclosed new positions (guide).
• 8-K alerts — material corporate events: CEO departures, acquisitions, guidance changes, often filed after hours.
• Congressional trade alerts — a member of Congress disclosed a trade in a stock you follow (guide).

Designing an alert set that doesn't burn you out

Alert fatigue is the failure mode. When every ping is noise, you stop reading them, and the one that mattered dies in the pile. Principles that keep an alert set useful:

1. Every alert should have a pre-decided action. "If AAPL hits $200, I trim" is an alert. "Tell me whenever AAPL moves" is a doomscroll subscription.
2. Match alert types to your horizon. Long-term investors want earnings dates, filing alerts, 200-day breaks, and big percent moves. Swing traders want levels, volume, and band breaks. Nobody needs all 26 types on every ticker.
3. Tier your watchlist. Positions you own get tight, multi-signal coverage. Research candidates get one or two "wake me up" triggers (52-week low, insider cluster buy). Everything else gets nothing.
4. Prefer state changes to states. "RSI crossed below 30" fires once; "RSI is below 30" nags daily. Good alert systems fire on the crossing, then stay quiet.
5. Review quarterly. Delete alerts you ignored three times in a row. If you didn't act on it, it isn't part of your plan.

Setting these up

The Stock Alerts app for iOS and Android supports 26 alert types across all the categories above — price, percent, moving averages, RSI, Bollinger Bands, volume, 52-week levels, earnings, dividends, and real-time SEC/congressional filing alerts — with per-alert notification settings. See the full alert list or download the app to build your own set.

Related guides

• How to Read an SEC Form 4
• Insider Buying vs. Selling
• How Congressional Stock Trading Disclosures Work

Not investment advice. This article is for educational purposes only. Stock Alerts does not provide financial, investment, or legal advice. Technical indicators and alerts are informational tools, not recommendations to buy or sell any security. Past performance is not indicative of future results.