The Stockholm Stock Exchange opened Tuesday with modest gains.

As of 09:21 CET, the OMXS30 index was up 0.32 percent at 3,163.07. Shares worth approximately SEK 1.7 billion changed hands on the Stockholm bourse.

Energy led the major industrial sectors with a 1.75 percent gain. At the other end of the spectrum, healthcare lagged, falling 0.27 percent.

Among the blue-chip stocks in the OMXS30 index, Nibe B rose 1.5 percent while EQT gained 1.3 percent. The weakest performers were Astra Zeneca, down 1.6 percent, and Saab B, which shed 0.8 percent.

Lighting company Fagerhult issued a profit warning after Monday's close. First-quarter operating profit is expected to come in weaker than anticipated. Net sales reached SEK 1,821 million (1,940), while EBITA declined to SEK 44 million (163). The profit warning was attributed to general market uncertainty stemming from the geopolitical situation in the Middle East and a stronger krona. The sales mix also negatively impacted the gross margin. Fagerhult plummeted 18 percent in Tuesday's trading.

Investment firm Investor reported an adjusted net asset value (NAV) of SEK 367 per share as of March 31. This represents a 3.0 percent increase from SEK 355 at the turn of the year. Total return amounted to 7.2 percent, compared to minus 1.2 percent for the SIXRX total return index. Investor climbed 0.9 percent.

Engineering group SKF reported first-quarter adjusted operating profit 7.9 percent above analyst expectations. Revenue was in line with consensus. SKF shares rose 0.2 percent.

Online broker Avanza Bank's first-quarter revenue and operating profit were in line with expectations. Alongside the report, Avanza announced plans for its first international expansion into Denmark, with a targeted launch in the second half of 2027. Avanza fell 6.4 percent.

Real estate company Wihlborgs reported income from property management of SEK 520 million for the first quarter, beating analyst expectations of SEK 492 million. Rental income was also slightly higher than consensus. The stock declined 2.7 percent.

Real estate firm Wallenstam saw its income from property management fall 7 percent to SEK 292 million. Wallenstam also reiterated its 2030 target for a net asset value of SEK 80 per share. Wallenstam retreated 2.2 percent.

Private equity firm EQT's new fund, BPEA IX, was oversubscribed and closed with total commitments of USD 15.6 billion, equivalent to SEK 143 billion. This makes BPEA IX the largest private equity fund ever focused on the Asia-Pacific region. EQT rose 1.5 percent.

Silex Microsystems intends to list its shares on Nasdaq Stockholm. The IPO is expected to take place in the second quarter. Anchor investors include Creades, AFA Försäkring, AP3, Capital Research Global Investors, Swedbank Robur, AP4, AP2, Fidelity International, and Carnegie Fonder.

In this morning's analyst notes, SEB downgraded Volvo Cars to "hold" from "buy." The stock slipped 0.4 percent.

Dagens Industri recommended selling Sivers Semiconductors after the stock surged 600 percent in three months. Sivers tumbled 9.1 percent.