Starts trading in Milan after spin-off from parent CNH Shares fall 10% as investors favour CNH CEO says to resume partnership talks, nothing immediate Partnerships could lead to M&A - analyst MILAN, Jan 3 (Reuters) - Iveco shares sank on its market debut on Monday as CEO Gerrit Marx said the standalone Italian truckmaker would offer a bet on a small but dynamic company with proven turnaround skills. Spanning truck, bus, powertrain and speciality vehicle businesses, Iveco completed its spin-off from CNH Industrial (CNHI.MI) on Jan.1, mirroring moves by larger rivals Daimler Truck and Traton . read more After opening at 11.26 euros each, giving Iveco a market value of 3.05 billion euros ($3.5 billion), shares plunged 9.9% to 10.14 euros on the Milan bourse by late morning. Meanwhile shares in CNH, which is now focused on agriculture and construction vehicles, were flat at 15.04 euros each, after rising 65% last year to hit a string of record highs recently. "The market could be tempted to favour CNH (off highway business) in the very short term," Intesa Sanpaolo analyst Monica Bosio said. Thin holiday trading, with the London market shut, meant a few days were needed to better assess the reaction to the spin-off, which leaves Iveco more exposed to tough competition, analysts said. Speaking before the listing, Marx said Iveco was gaining market share in light trucks and buses and had managed to whip its heavy duty truck business into "very good shape". "We are small but we can act very fast. We have proven that in only two years we can develop full electric trucks and bring them to series production," Marx told reporters. "We"re a little bit crazy when it comes to deploying new technologies, we have to be, because if I work like our large competitors work, there is no Iveco tomorrow." The group, whose top investor is Exor (EXOR.MI), the holding company of Italy"s Agnelli family, in November presented a business plan focused on zero-emission trucks and buses and a promise to act like a startup. read more PARTNERSHIPS Asked about Iveco"s partnership strategy at a ceremony for its market debut, Marx said that discussions would now resume after a quiet period before the listing, but there was "nothing immediate" on the horizon. Iveco, which has a joint venture with U.S. group Nikola (NKLA.O) to produce battery electric and hydrogen heavy trucks, is looking for partnerships in technology, including fintech, components supply and development projects. "On heavy duty trucks a partner can help too, not necessarily in Europe," the German executive added. The smallest among major European truckmakers, Iveco has often been seen as a potential M&A target. Marx said he saw Iveco neither as a target nor an aggressive dealmaker. "We will partner, we won"t sell," he said. Intesa Sanpaolo"s Bosio said that Iveco was well set to operate independently but "in the medium-long term its commitment in partnering with other players may lead to the finalisation of M&A deals". Exor, which now holds 27% of Iveco common shares and 42.5% of voting rights, has reaffirmed its commitment "to the long-term development" of both Iveco and CNH. ($1 = 0.8821 euros)