can you describe an algo you wrote using google sheets? or using anything?
Algos are like mechanical workshops, you can build whatever you like, depending on the tools within the workshop and your skill level.
So you have a workshop with tools and your skills, the next thing is your imagination, what to build, what takes your fancy?
So the tools you have to work with for example are:
Stock code
Stock name
Stock sector
Current price
Open, High, Low, Close, Volume
Market Capalization
Shares on issue
Trade time
Trade date
Average Volume
PE ratio
EPS
52 week high
52 week low
Price % change
Closing price yesterday
The currency
Some currency and crypto rates
From that you can discover:
Turnover
Average turnover
HHV & LLV (Highest High and Lowest low values).
Breakouts.
Support and resistance levels (depending on you ability to code and the type of S/R)
Moving averages, any frequency you wish to imagine.
Bullish and Bearish bars.
Candlesticks identification and this sort of thing.
Bollinger Bands and a bunch of other indicators, you just need to formulate these.
Volume spikes and Low volume areas, changes in volume by percentage.
You can create buying and selling templates to speed up order executions.
You can compare stocks using volatility or ROC.
You can find the hottest stocks today or last few days or last few months or years, ie Fastest or biggest movers or on highest turnovers / volume.
You can create Sparkline charts - fingernail sized multiple charts on one sheet.
You may be seeking either high or low volatile stocks to trade.
You may wish to find stocks with the lowest number of shares on issue with the highest volumes.
Stocks making new highs or Lows.
Discover which stocks are rising while the market is falling & vice versa...
The list goes on..... you can virtually create whatever you wish to dream up.