How competitor signals help Amazon Advertisers capture market share in real time

On Amazon, campaign performance is shaped by more than the settings inside your ad account. It is also shaped by the market around you, including competitor availability, pricing, Buy Box ownership, promotional activity, and changes in category demand.

When a competitor goes out of stock, raises its price, loses the Buy Box, or becomes less visible, shopper behavior can shift quickly. For challenger brands, these moments can create valuable opportunities to capture demand that competitors are no longer positioned to win.

The challenge is that most advertisers don't see these opportunities fast enough or can't act on them efficiently enough. By the time performance metrics show a change, the market may have already moved and the window to capture incremental share may have narrowed.

That’s why Perpetua introduced Market Signals, a suite of optimization capabilities that integrates competitor and retail intelligence directly into campaign execution. Competitor Signals is the part of the suite built for exactly these moments.

What are Competitor Signals?

Competitor Signals help advertisers optimize campaigns based on live changes in the competitive landscape. These signals can include competitor inventory availability, pricing changes, Buy Box ownership, and other market conditions that influence where shopper demand goes.

Instead of relying only on historical performance metrics, Perpetua uses these signals to determine when to increase bids, reduce spend, protect efficiency, or capture newly available demand. This gives advertisers a more complete view of the market conditions shaping campaign performance.

For brands competing in fast-moving Amazon categories, that visibility matters. When a competitor becomes vulnerable, the ability to act quickly can be the difference between capturing the demand they leave behind and watching it go to another brand.

Competitor out of stock? Capture the demand they can’t

One of the clearest examples of competitor-driven opportunity is an out-of-stock event. When a competitor goes out of stock, shoppers don't stop searching and demand doesn't disappear; it shifts to the next best available option.

If your product is in stock, relevant, and visible, that moment can become an opportunity to capture incremental sales and market share. The key is ensuring your campaigns can respond while the opportunity is still active.

With Competitor Signals, Perpetua detects when a competitor goes out of stock and automatically raises bids across your campaigns for the period you specify, then normalizes them once the competitor restocks.

For example, if a competing energy drink goes out of stock on Amazon, shoppers searching for that product or related category terms may still be ready to buy. Perpetua can help your campaigns bid up during that window, putting your product in a stronger position to capture demand while the competitor is unavailable.

Without Competitor Signals, this type of opportunity often requires manual monitoring, manual bid changes, and constant campaign oversight. With Perpetua, the response can happen automatically, helping advertisers move faster than teams relying on manual intervention.

Competitor price increase? Become the better-value alternative

Pricing is another competitor signal that can quickly reshape shopper behavior. If a competitor raises its price, cost-sensitive shoppers may begin looking for alternatives that offer a more compelling value proposition.

Perpetua can use Competitor Signals to identify these pricing shifts and adjust bids accordingly. When a competitor becomes less price competitive, your campaigns get more aggressive to reach shoppers who are suddenly open to switching.

For challenger brands, this can be especially powerful. You may not always have the same brand recognition as an established category leader, but when that leader becomes more expensive, shoppers may be more open to comparison.

Stronger ad visibility during that moment can help your product enter the consideration set and win the sale. Perpetua acts on the market condition that created the opportunity, before it shows up in a performance report.

Competitor price drop? Protect your efficiency

Not every competitor signal means advertisers should spend more. If a competitor drops its price aggressively, the environment may become more difficult to compete in, especially if that lower price puts pressure on your conversion rate.

In that situation, continuing to bid aggressively may lead to inefficient spend. A lower-priced competitor can make each click less likely to convert, which means your campaign strategy should adjust to reflect the more competitive environment.

Market Signals helps Perpetua recognize when conditions become less favorable and adjust accordingly. If a competitor lowers its price in a way that changes the value equation for shoppers, Perpetua can reduce bids to help protect efficiency.

The goal is not simply to bid up whenever the market changes; the goal is to understand what the change means and respond with the right strategic action.

Buy Box changes and competitive visibility

Buy Box ownership is another critical factor in Amazon performance. When a competitor loses the Buy Box, they convert less efficiently, which creates an opening.

On the other hand, if your own product loses the Buy Box, continuing to spend aggressively can create inefficiency. Campaign strategy should reflect whether the product is in a strong position to convert the traffic advertising is driving.

Market Signals helps bring this kind of retail intelligence into advertising optimization. Instead of treating Buy Box changes as separate operational issues, Perpetua can use them to inform campaign strategy.

Advertising performance doesn't happen in a vacuum. When the digital shelf changes, campaign strategy changes with it.

Why competitor signals matter for challenger brands

For challenger brands, growth often depends on finding and acting on openings in the market. These brands may not always have the largest budget, the strongest organic position, or the same brand equity as category leaders, but they can win by being faster, more precise, and more responsive to change.

Competitor Signals identify the moments competitors are vulnerable and turn them into campaign actions while the conditions shaping demand are still live.

This is a fundamental shift in how Amazon advertising works. It moves advertisers from reactive campaign management to proactive market capture, where strategy is informed by what is happening across the category in real time.

From market intelligence to automated execution

Many advertisers already understand that competitor dynamics matter. The problem is that insight alone doesn't create impact unless it is connected to execution.

Knowing that a competitor is out of stock, has raised prices, or has lost the Buy Box is useful. But if that information sits in a dashboard and doesn't influence bids, budgets, or campaign strategy, the opportunity can still be missed. Perpetua closes that gap by integrating competitor intelligence directly into optimization.

When a competitor goes out of stock, campaigns can respond. When a competitor raises prices, campaigns can capitalize. When a competitor drops prices or Buy Box conditions shift, strategy can adapt to protect efficiency.

Market Signals turns competitor volatility into an always-on growth strategy: competitor changes become signals that continuously guide campaign execution.

Win the moments your competitors miss

Marketplace conditions change constantly, and in competitive Amazon categories, those changes can create meaningful opportunities for brands that are ready to act. The brands that move fastest are often the ones that capture the demand others leave behind.

Competitor Signals help Perpetua advertisers identify those opportunities and respond with greater speed and precision. Campaign outcomes are downstream of market conditions. Competitor Signals let advertisers optimize at the source.

Campaigns can do more than react to the market: with Market Signals, they use it to grow.

Ready to capture demand when your competitors can’t? See it in action here.