Not All Historical Prices Are Created Equal, But Why Does That Matter?

In finance and fintech, historical price data is a key input into every decision, strategy, and chart you build. The reality is that information can get especially complicated when corporate actions are in play. Taking the price of yesterday at face value? That’s a fast track to skewed backtests, misleading performance metrics, and inaccurate charts.

The truth is not all price histories are created equal.

Basic Historical Prices are fine, right?

Standard historical price feeds often miss the details that matter. When a stock splits 2-for-1, pays dividends, spins off a division, or even changes ticker, those "raw" prices don’t reflect these changes. The result? Your historical trend looks jagged when it should be smooth. Your total return figures? Misleading.

Let’s say you bought at $100 and then a 2-for-1 split happens. Naïve data still shows $100. It hasn’t been adjusted to reflect that you now own twice as many shares at half the price. Your return calculations would be wrong, giving you flawed insight.

Enter QUODD: Stitching Data Back Together

At QUODD, we don't just serve up numbers. We go deeper. We blend prices with corporate actions to craft stitched timelines that can be adjusted or left unadjusted depending on your use case. Offering the flexibility to see raw, price-return, or total return adjustments.

Why that matters:

• Seamless, accurate backtesting. You’re not fighting phantom price jumps or dips.
  
  
• True total-return calculations. Dividends, splits, spin-offs? Baked into the data.
  
  
• Clean, readable charting. Visual trends that actually tell the truth.
  
  
• Fewer data headaches and faster time-to-market. Eliminating the need for manual cleanup.

Think of QUODD’s timeline as a carefully edited manuscript. Unadjusted data is the unfiltered draft—raw, messy, and unreliable.

We Provide you a Competitive Edge:

• Our End-of-Day & Historical Stock Prices API delivers open, high, low, close, volume, and VWAP/TWAP going back to January 1, 1994 (US) or 2000 (most global markets).
  
  
• We handle automatic identifier stitching, so ticker changes, CUSIP shifts, mergers, and exchange moves don’t break your time series.
  
  
• We also support adjustments for splits, dividends (cash and extraordinary), spinoffs, bonus shares, scrips, stock distributions, and more.
  
  

But here’s where QUODD really stands out. Not all adjustments are equal in approach or reliability. At QUODD, we custom-blend those corporate actions with master-grade reference data. 

Your timeline isn’t just stitched. It’s curated.

What are you getting?

1. Wealth of Context
   QUODD doesn’t just apply adjustments. We track and timestamp each corporate action so your data knows why and when its values shift.
   
   
2. Flexible Workflows
   Want unadjusted charts for raw volatility analysis? Or adjusted data for return calculations? We support both, precisely tailored.
   
   
3. Global Consistency
   Our coverage spans global exchanges. We keep your data normalized even when different exchanges publish data inconsistently.
   
   
4. Built for Action
   Whether you're powering real-time dashboards, back-office analytics, or a mobile app, QUODD ensures your price history doesn’t trip you up.
   
   
5. Proven Trust
   Smart companies that value data accuracy—especially in regulated environments—choose QUODD because we make the complex, effortless.
   
   

If you have been burned by inaccurate data in the past, consider QUODD for its institutional-grade historical data. Trusted for decades by startups and established firms alike, let QUODD’s expertise accelerate your time to market, and reduce your operational overhead of managing low quality data.

Get in touch with us to learn more.