Rockwool stock falls 6.59 percent as BofA stays underperform

Rockwool stock is under pressure after BofA kept its underperform view on September 3, 2026. The Denmark-listed builder materials group traded at DKK 198.40, down 6.59 percent.

Rockwool stock (DK0010219153) fell 6.59 percent to DKK 198.40 on September 3, 2026, putting the Denmark-listed builder materials group among the day s biggest decliners in Copenhagen. On the same day, BofA Securities kept its underperform view on Rockwool, citing rising capital expenditure and eroding returns.

BofA keeps pressure on the name

According to an Investing.com report on BofA, the broker favored Saint-Gobain, Kingspan and Ferguson among building materials names while leaving Rockwool on underperform. The same report said the bank sees the group facing higher investment spending and weaker returns.

The move matters because Rockwool was still quoted at DKK 198.40 on September 3, 2026 after a daily decline of 6.59 percent, while the broader Danish market list showed Rockwool A shares at DKK 209.50 and down 5.84 percent. That gap underlines that both share classes were weak on the session.

Market tone in Copenhagen

In Nordnet s Copenhagen market overview on September 3, 2026, Rockwool A/S series B was among the listed losers, with the stock at DKK 198.40 and Rockwool A/S series A at DKK 209.50. The two lines give investors a direct snapshot of the day s price pressure in Copenhagen.

For a stock that has to balance pricing power, capex and returns, that combination is more important than a single analyst sentence. The market reacted to the valuation and execution question immediately.

Rockwool in insulation

Rockwool makes stone wool insulation products used in buildings and technical applications, so margins, pricing and capital spending stay central for the stock. That is why the current market debate is less about the product line than about returns on invested capital.

Rockwool stock at DKK 198.40

Rockwool stock traded at DKK 198.40 on September 3, 2026, after a drop of 6.59 percent in Copenhagen. Rockwool A shares were at DKK 209.50 on the same market overview and down 5.84 percent.

Rockwool stock facts

• Company: Rockwool A/S
• ISIN: DK0010219153
• Ticker: ROCK B
• Trading venue: Copenhagen Stock Exchange
• Price (as of September 3, 2026): DKK 198.40
• Sector / Industry: Materials / Construction Materials
• Index membership: OMX Copenhagen 20