EMA/SMA giving wrong values in live trading

Question

Sejpalsinh Jadeja Original Post

AlgoDelta Team

EMA/SMA values not matching chart in my algo (using 1-min candles)

I’m calculating EMA and SMA in my algo using 1-minute candles built from ticks.

But when I compare it with broker/chart values, the numbers don’t match exactly.

I’ve checked my candle data (OHLC looks correct), still indicator values are slightly off.

Is there something I’m missing in EMA/SMA calculation?

Posted Apr 24

Reply

Answer 1 · 2026-04-24T22:40:00+05:30

Support AlgoDelta AlgoDelta Support · Apr 24

Yes, this may be the issue of data consistency.

See may be the problem because of these factors:

Calculation on incomplete candles
Missing initial historical data.
Candle mismatch because of timing

See we need the both the live and historical data to get the accurate values in EMA and SMA.

Below is the code that you can refer:

def calculate_ema(prices, period=5):
    ema = []
    k = 2 / (period + 1)

    for i, price in enumerate(prices):
        if i == 0:
            ema.append(price)
        else:
            ema.append(price * k + ema[-1] * (1 - k))

    return ema

# This prices should be have the both live and historical data
prices = [100, 102, 101, 105, 107, 110]

ema_values = calculate_ema(prices, period=3)
print(ema_values)

Verified Solution

Perfect, this is exactly what I was looking for. I followed the instructions and code, and I get the accurate values. Thanks for the help. – Sejpalsinh Jadeja Team Jun 16

EMA/SMA giving wrong values in live trading

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