It would be very helpful to be able to add a Trend line in a Line or Bar Graph. (Note: not a Goal line, but a true, data driven Trend line as can be done in Excel).
We desperately need to be able to add trendlines to our graphs. Currently, we have to export multiple reports from a Dashboard, then add trendlines via Excel.
Right now, HS reports feel limited to snapshots in time. Historical trends and trendlines would be hugely valuable!
You could use the custom report builder to create a combination type report with a line shown by adding a second y axis.

Thanks for the suggestion, @HFisher7; however, this addition is a line graph rather than an actual trendline.
upvote for trendlines on graphs
HubSpot’s reporting tools are significantly better than some of the competition, but this would be so valuable. Massive upvote!
This would make the reporting tremendously more useful. Agreed, shouldn’t have to export to excel to demonstrate trends.
This is a really good idea, it would make a lot of graphs much more useful.
Please god trend lines
There is an existing suggestion for this, it may be worth upvoting that if you haven’t already: HubSpot Community - Trend Lines in Graphs - HubSpot Community
Yep, we desperately need this!
Echoing the desperate need! This is easy to do in Salesforce, we need this in HubSpot.
echoing this again for the data scientist teams.
This shoud be easy to add a trend, and rolling average.
HUBSPOT PLEASE HELP!
NEED THIS!!
Definitely useful and need it as well for our sales reports!
This would be very helpful!
Agree
Hey folks, hear you here! We are digging into this currently!
Please keep voting if interested, I will be reaching out to those here for a private beta asap. Thanks!
Trendlines are a basic tool when it comes to data analysis, this is a must have feature. Plesae add me to the beta.