On Nov 7, 第一生命保険株式会社 submitted the Change Report to Ministry of Finance. The report shows that 第一生命保険株式会社 increased their holdings in $Kansai Paint (4613.JP)$, with their joint shareholding ratio up from 5.23% to 6.68%.
Source: Edinet Announcement
What is the 5% shareholding reporting system?
Shareholders with holding ratio exceeding 5% must submit a Large Shareholding Report within five business days from that day. If the holding ratio increases or decreases by 1% or more after submitting a Large Shareholding Report, the holder must submit a Change Report within five business days from that day.