Rainmaker Systems, Inc. (VCTL)

[Ducimotto]

Possible reasons for stock price increase:

Rainmaker did a rebranding in 2015, and began doing business as ViewCentral (VCTL):
https://www.businesswire.com/news/home/20150318005239/en/Rainmaker-Systems-Announces-Major-Rebranding-Initiative

ViewCentral was acquired by CallidusCloud in 2016:
http://www.viewcentral.com/04082016.html

In 2018 CallidusCloud was acquired by the German software company SAP:
https://news.sap.com/2018/04/sap-completes-acquisition-of-callidus-software-inc/

About SAP:
https://www.sap.com/corporate/en/company.html#overview

https://www.sap.com/corporate/en/documents/2017/04/4666ecdd-b67c-0010-82c7-eda71af511fa.html

I think the rise in the stock price of VCTL is related to the performance of SAP. NYSE (SAP)
I could be way off base here, but any comments on this would be helpful.