A number of under-the-radar names hit the market over recent trading sessions, both home and abroad, but it was a junior copper explorer and a digital payments processor that took the honours this week.

New ASX listings

The timing couldn't have been worse for iron ore explorer Pearl Gull Iron (ASX: PLG), which made its ASX debut on Monday, the same day iron ore prices extended their recent plunge. For the first time in over a year, the commodity fell through the US$100 per tonne mark, and while it has since reclaimed that threshold, price action weighed on sentiment as the company hit the market to trade below listing price. After raising $4 million, the company is running diamond drilling at its Switch Pit prospect at Cockatoo Island, a long-established location for premium-grade iron ore.Next in line this week were Internet-of-Things (IoT) platform X2M Connect (ASX: X2M), which raised $8 million, and nickel explorer Widgie Nickel (ASX: WIN), which secured $24 million in IPO funding.

X2M Connect operates in the tech space, with more than 120,000 smart devices connected to its IoT platform, with distributed intelligence solutions generating real-time information and control to over 30 customers from around the world. Amid interest, a number of ASX-listed players have emerged in this space lately, and that was shown by a strong start to life as a public company, with shares up 40% at one stage, albeit then shedding most of those gains.

On the other hand, Widgie, with its project spun-off from Neometals (ASX: NMT), enjoyed a bright start to trading as well, up more than 20% this week. The company will commence its own maiden drilling campaign in the next month, south of Kalgoorlie, with recent drilling conducted by parent company Auric Mining (ASX: AWJ) returning thick massive nickel sulphide intersections at its Munda prospect.Rounding things out, it was a stellar debut for junior copper explorer Revolver Resources (ASX: RRR), up 20% on day one, and as much as 40% higher the following day. The company Dianne Copper Mine was once home to some of the highest-grade copper in the country, but when commodity prices floundered, the site was closed. Management of Revolver Resources hope modern exploration techniques will prove fruitful after raising $12.7 million in funds at $0.20 per share.

New US listings

Restaurant payments processing firm Toast (NYSE: TOST) kicked off the week with a performance to remember, climbing around 50%. The stock had been priced at US$40 per share as part of the IPO, with its value topping US$20 billion. Toast provides restaurants with point-of-sale hardware, team-management tools, and order-management software, serving around 48,000 restaurants.Customer support software firm Freshworks (NASDAQ: FRSH) completed its US$1 billion raise, and with interest in its larger rival Salesforce (NYSE: CRM) soaring in recent months, that proved to be a strong catalyst for the stock, gaining nearly one-third on debut.Online fashion brand retailer A.K.A Brands (NYSE: AKA) didn't share the same fortune as some of the other class of IPO debutants this week, down around 13% since listing day. That followed the company decision to already cut the size of its IPO amid wobbly interest.Elsewhere, there were bright debuts for background & identity verification tech company Sterling Check (NASDAQ: STER), up 17%, and ethically-sourced jewelry retailer Brilliant Earth Group (NASDAQ: BRLT), which soared 42.7%. In a similar fashion, premium food retailer Sovos Brands (NASDAQ: SOVO), blockchain tech firm Argo Blockchain (NASDAQ: ARBK) and international money transfer service Remitly Global (NASDAQ: RELY) each gained around 12%On the other hand, it was a slow start for healthcare invoicing and payments SaaS business EngageSmart (NYSE: ESMT),  down 9%, and dietary supplements business Thorne Healthtech (NASDAQ: THRN), down 24.5%.Canadian digital bank VersaBank (NASDAQ: VBNK) is expected to debut tonight as it completes a small dual-listing, alongside COVID home test manufacturer Cue Health (NASDAQ: HLTH), which has secured US$200 million.