AltMountain

DayMark Fund I Feeder, LP

New York, NY · CIK 2139955 · Managed by Opto Investment Management, LLC

DayMark Fund I Feeder, LP is a private investment fund based in New York, New York. Its most recent Form D, filed Jun 15, 2026, reports no sales yet. The minimum investment it accepts from an outside investor is $100,000. It relies on the Section 3(c)(1) exclusion, which limits it to 100 beneficial owners, typically accredited investors. The offering uses Rule 506(b), which does not permit general solicitation. Related persons named in the filing include Opto Custom GP 2023 LLC; Opto Investment Management, LLC.

Total raised
$0Cumulative sales reported on Form D
Investors
0
First sale
—
Minimum investment
$100,000
Who can invest
Accredited investorsSection 3(c)(1): up to 100 beneficial owners
Offering exemption
Rule 506(b)No general advertising
Key people and entities
Opto Custom GP 2023 LLC; Opto Investment Management, LLC
Latest Form D
Jun 15, 2026

From SEC filings, not verified. This page republishes the fund's Form D as filed. It is not an offer, solicitation or recommendation, and AltMountain has not reviewed the fund. “Raised” is cumulative sales, not current assets or performance. Returns are not part of SEC filings. Private funds are speculative, illiquid and generally limited to accredited investors or qualified purchasers. Full disclosures · Request a correction

Questions about DayMark Fund I Feeder, LP

What is the minimum investment for DayMark Fund I Feeder, LP?

According to its latest Form D, filed Jun 15, 2026, the minimum investment DayMark Fund I Feeder, LP accepts from an outside investor is $100,000.

Who can invest in DayMark Fund I Feeder, LP?

DayMark Fund I Feeder, LP is generally open only to accredited investors, and it may have no more than 100 beneficial owners because it relies on Section 3(c)(1). It uses Rule 506(b), which does not allow general advertising.

How much has DayMark Fund I Feeder, LP raised?

DayMark Fund I Feeder, LP's latest Form D, filed Jun 15, 2026, reports no sales yet.

Where is DayMark Fund I Feeder, LP based?

DayMark Fund I Feeder, LP is based in New York, New York and is managed by Opto Investment Management, LLC.

Size compared with every private investment fund

This fund hasn't reported any sales yet.

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