Month-on-month and Quarter-on-Quarter
Don't use &quot;环比&quot; alone, &quot;比&quot; means comparison in the sentence and needs a baseline.

stock prices jumped 5% month over month and 3% quarter over quarter

股价本月环比上涨5%，本季度环比上涨3% (comparison base on the current month/quarter)
or
股价每月上涨5%，每季度上涨3% (intend to describe a long period of time)
And some alternative sentences could go like this:
(unlikely to see both &quot;month&quot; and &quot;quarter&quot; in one sentence, but need a baseline for comparison anyway):

2021年3月，股价环比上涨5%。
2021年第一季度，股价环比上涨3%。

Edited:
&quot;同比&quot; means the same period of time, while &quot;环比&quot; means the last period of time.
Not suggested to define them as &quot;year over year / month over month&quot; when using alone.
So usually needs a time block in the same sentence to avoid ambiguous.