SPACs are trying to stand out in a sea of blank-check listings. Here's what 4 high-profile backers are doing to make their IPOs more attractive to investors.

• The SPAC frenzy continues in 2021, with over 130 blank check firms listing this year already.
• Standing out has become much more challenging as the field becomes crowded.
• Some SPACs are resorting to new methods to catch the eye of investors, according to a report in DealBook on Wednesday.
• $4

SPACs are booming. Otherwise known as blank-check companies, SPACs have exploded since the start of 2020, with over 130 SPAC listings already in 2021.

SPACs list with the aim of identifying a merger partner to take public. This method is typically done in lieu of an IPO or a direct listing, and has garnered support from Wall Street heavyweights as well as pop icons and professional athletes.

Given the frenzy around blank-check listings, the field is becoming increasingly crowded. According to $4 on Wednesday, some SPACs are resorting to new methods to catch they eye of investors.

Here are what four high-profile backers are doing to stand out.

1. NightDragon Acquisition Corp, a SPAC started by the former FireEye executive Dave DeWalt, opted for a structure meant to benefit all shareholders, rather than favor sponsors.

NightDragon links its "promote", which is the 20% stake that goes to the sponsor regardless of how the deal turns out, to the performance of the merger. NightDragon announced Monday $4 at $10 each share this week.

2. Pershing Square Tontine Holdings, a SPAC started by billionaire hedge fund manager Bill Ackman, has also rewritten the rules. Ackman has said he will be "$4" in a bid to appeal to more investors. "We created the most investor-friendly SPAC in the world," $4, adding that SPACs are an easier route to public markets than a traditional IPO.

3. For Reinvent Technology Partners, a SPAC started by LinkedIn co-founder Reid Hoffman, founder shares will have up to a $4 before they can be sold. "The economics are aligned much closer to venture capital," $4.

4. Executive Network Partnering Corp., a SPAC for which Former House Speaker Paul Ryan serves as chairman, will give founders 1% of the company's size. That is about half of what most SPACs are charged. Investment banking advisory firm Evercore called this structure $4, or "capital which aligns and partners with a sponsor."