SumZero

18 year old social network offering actionable investment opportunities from professional investors, daily. Fund Marketplace – source, track, invest. DYODD.

[Tarek Antaki @TarekAntaki]

Closing my long $IAC short $MGM. No real progress on non-core asset sales. “Barry being Barry” means this could take a year+. Still long $IAC (but smaller size) bc I like the $mgm asset and I think it’s a coiled spring given the valuation + buyback rate at $mgm. @SumZero

[SumZero @SumZero]

TOMORROW, final day in this open submission window.

This is an incredible opportunity to get your work in front of a very seasoned and sophisticated investment team.

See additional details around the competition, below.

[SumZero @SumZero]

SumZero, in partnership with Mariner Investment Group, is hosting a leveraged large-cap investment competition focused on high-conviction, rigorously underwritten equity opportunities.

Finalists will present directly to Mariner’s senior investment team.

U.S. & Western Europe | $3bn+ market cap | 4.0x+ leverage

Submissions open Jan 12 – Feb 20. Open to ALL investors.

Review full contest details – including judges panel, incentive program and more – and compete only on
sumzero . com

*If you don't yet have a sumzero account, take 1 minute to apply so you can compete.

[SumZero @SumZero]

This competition window closes this Friday, February 20th at 11:59pm est.

This is an excellent opportunity to get your work in front of an incredibly senior team of investors at Mariner – the CEO, CIO, Head of Strategy and multiple Sr. PMs.

There's a good deal of cash up for grabs to some of the top selections and a ton of exposure to the winners across the various SumZero networks as well.

Full details and the ability to compete are all on sumzero . com.

[SumZero @SumZero]

SumZero, in partnership with Mariner Investment Group, is hosting a leveraged large-cap investment competition focused on high-conviction, rigorously underwritten equity opportunities.

Finalists will present directly to Mariner’s senior investment team.

U.S. & Western Europe | $3bn+ market cap | 4.0x+ leverage

Submissions open Jan 12 – Feb 20. Open to ALL investors.

Review full contest details – including judges panel, incentive program and more – and compete only on
sumzero . com

*If you don't yet have a sumzero account, take 1 minute to apply so you can compete.

[SumZero @SumZero]

SumZero is currently facilitating a focused review of leveraged large-cap equity ideas with Mariner Investment Group.

Select submissions will be reviewed directly by Mariner’s senior investment team, with finalists invited to present and discuss their work live. The review is time-bound and limited in scope.

The mandate is intentionally narrow: high-conviction long or short equity ideas in U.S. or Western European companies with $3bn+ market capitalizations and 4.0x+ leverage, where capital structure, downside protection, and catalysts are central to the thesis.

The current review cycle closes in two weeks. Total cash awards across finalists are $38,000, with additional opportunity for direct engagement with Mariner’s senior investment team.

If you have a differentiated idea that fits the mandate, login to your SumZero account to pitch your thesis.

[SumZero @SumZero]

SumZero, in partnership with Mariner Investment Group, is hosting a leveraged large-cap investment competition focused on high-conviction, rigorously underwritten equity opportunities.

Finalists will present directly to Mariner’s senior investment team.

U.S. & Western Europe | $3bn+ market cap | 4.0x+ leverage

Submissions open Jan 12 – Feb 20. Open to ALL investors.

Review full contest details – including judges panel, incentive program and more – and compete only on
sumzero . com

*If you don't yet have a sumzero account, take 1 minute to apply so you can compete.

[SumZero @SumZero]

Replay of interview with Palmer Square President, Matt Bloomfield

$PSBD
https://t.co/B9N9iuwvQz

[SumZero @SumZero]

For those trading credit or allocating across structured credit, this recent discussion with $PSBD Palmer Square BDC President Matt Bloomfield should be of interest.

Matt breaks down where real relative value exists in today’s credit cycle and why traditional CLO, syndicated loan, and private credit plays now demand a rethink.

Linked below.

[SumZero @SumZero]

$LRN – the winner of the Top Stocks 2026 Investment Competition. Congrats again, @ASB_Partners

[ASB Partners @ASB_Partners]

Highlights from the Stride Inc. $LRN call ...The big question is can $LRN get back to double digit revenue growth next year....Mgmt. sounds very confident...They are on track to do $8/share in EPS this year...
1/x

[SumZero @SumZero]

$LRN having a solid morning, up 20%+

This is an idea that @ASB_Partners put on our radar during the Top Stocks 2026 Investment Competition, sponsored by @AlphaSenseInc and one that has been available to all SumZero members since it was shared.

Ultimately, this idea won the competition after multiple rounds of voting and a live stock pitch among the top 3 ideas ~2 weeks ago. For those that missed it, you can view those pitches with the link below $LRN, $IPCO, $DKNG.

How we surfaced $LRN as the winner of the Top Stocks Competition:

- Over the final month+ of 2025, we received 100+ high conviction ideas from across the SumZero network
- From December 23 - 29, the broader community was given access to all submissions and the ability to vote
- 1,000+ votes surfaced a top cohort of ideas that moved on to the Semifinals and were sent directly to an independent panel of 30+ judges (family offices, endowments, and senior investors from the community)
- From that review, three ideas clearly separated themselves and had the opportunity to pitch live in front of our judges panel on January 15th, with other SumZero members in attendance

Linked below are those pitches. Enjoy
https://t.co/07HUtxaUhm

[Tarek Antaki @TarekAntaki]

After reading about $ddi on @SumZero I made it a decent size position. It may be the cheapest stock I’ve ever seen. $440m market cap with $400m in cash. Ltm $139mm in FCF. So in theory they could pay a 90% dividend then buy back the rest of the stock with <4 month of FCF. Risks👇

[SumZero @SumZero]

Last week, P10 $PX CEO Luke Sarsfield joined SZ to discuss valuation, growth, and competing in private markets – a candid fireside with Evercore ISI on SumZero.

Covers PE, private credit, M&A, and how management thinks about the stock today.

Full interview: https://t.co/Kruc44A2Ly

[Diego Milano @diegobmilano]

Long(ish) explanation of the rationale of investing in Braskem Idesa bonds:

https://t.co/JNNs4imv4v

[ASB Partners @ASB_Partners]

$LRN..I’m very humbled to share that I won SumZero's Top Stocks 2026 Investment Competition! A huge thank you to SumZero and the judges for the opportunity, and to AlphaSense for sponsoring the event. Please DM if you want the write-up or the Slide Deck. Important Reminder: This is not investment advice. Do your own work. This is a long-term thesis and could be volatile. $LRN #Sumzero #AlphaSense #Stride

[SumZero @SumZero]

What’s the most interesting leveraged large-cap setup you’re watching right now?

We're currently running a competition in partnership with Mariner Investment Group that explores those opportunities. High-conviction ideas. Complex capital structures.

This is a fantastic opportunity to gain direct access to senior decision-makers at Mariner Investment Group. $38k in awards on the line as well.

Compete on sumzero . com. Reach out with questions.

Mariner Investment Group, LLC (“Mariner”) is a leading alternative investment management firm founded in 1992, specializing in delivering sophisticated investment solutions across public and private markets. The firm manages approximately $9 billion in assets globally.

[Ridgepost Capital @RidgepostCap]

During a recent @SumZero-hosted webcast, our Chairman and CEO Luke Sarsfield shared why the middle and lower-middle market remains attractive amid broader deal activity. He went on to explain how shifting LP demand toward differentiated strategies positions us to deliver long-term value in the current private markets ecosystem.

Learn more from Luke on our outlook below.

[SumZero @SumZero]

Incredible work @ASB_Partners and congrats again!

Over 100 high conviction ideas put forward. Multiple rounds of voting from our broader buyside community and our 30+ person allocator judges panel. Really well done.

Looking forward to watching the thesis play out.

[ASB Partners @ASB_Partners]

$LRN..I’m very humbled to share that I won SumZero's Top Stocks 2026 Investment Competition! A huge thank you to SumZero and the judges for the opportunity, and to AlphaSense for sponsoring the event. Please DM if you want the write-up or the Slide Deck. Important Reminder: This is not investment advice. Do your own work. This is a long-term thesis and could be volatile. $LRN #Sumzero #AlphaSense #Stride

[Dominick D’Angelo @OSA_Rochester]

Congratulations @ASB_Partners on the SumZero win! Also enjoyed the podcast with @YetAnotherValue. $LRN is a very interesting idea.

[SumZero @SumZero]

What’s the most interesting leveraged large-cap setup you’re watching right now?

We're currently running a competition in partnership with Mariner Investment Group that explores those opportunities. High-conviction ideas. Complex capital structures.

This is a fantastic opportunity to gain direct access to senior decision-makers at Mariner Investment Group. $38k in awards on the line as well.

Compete on sumzero . com. Reach out with questions.

Mariner Investment Group, LLC (“Mariner”) is a leading alternative investment management firm founded in 1992, specializing in delivering sophisticated investment solutions across public and private markets. The firm manages approximately $9 billion in assets globally.

[SumZero @SumZero]

SumZero, in partnership with Mariner Investment Group, is hosting a leveraged large-cap investment competition focused on high-conviction, rigorously underwritten equity opportunities.

Finalists will present directly to Mariner’s senior investment team.

U.S. & Western Europe | $3bn+ market cap | 4.0x+ leverage

Submissions open Jan 12 – Feb 20. Open to ALL investors.

Review full contest details – including judges panel, incentive program and more – and compete only on
sumzero . com

*If you don't yet have a sumzero account, take 1 minute to apply so you can compete.

[SumZero @SumZero]

SumZero, in partnership with Mariner Investment Group, is hosting a leveraged large-cap investment competition focused on high-conviction, rigorously underwritten equity opportunities.

Finalists will present directly to Mariner’s senior investment team.

U.S. & Western Europe | $3bn+ market cap | 4.0x+ leverage

Submissions open Jan 12 – Feb 20. Open to ALL investors.

Review full contest details – including judges panel, incentive program and more – and compete only on
sumzero . com

*If you don't yet have a sumzero account, take 1 minute to apply so you can compete.

[SumZero @SumZero]

100+ high conviction opportunities were shared into our Top Stocks 2026 Investment Competition, sponsored by @AlphaSenseInc.

The SumZero Community voted for the top 10, who moved on to the Semis and were put in front of our 30+ person judges panel made up of allocators and senior investors from our network.

Today, we host the Finals, live at 11am EST where we'll hear pitches from the top 3. $DKNG, $LRN, $IPCO.CN

SumZero members, check your emails for registration details. See you there.

[Ridgepost Capital @RidgepostCap]

What long-term opportunities exist within the middle and lower-middle market for investors?

During a @SumZero-hosted webinar, our Chairman and CEO Luke Sarsfield laid out the white space that exists and how we navigate more opaque areas to yield the best outcomes for investors.

Learn more about our approach to investing here: https://t.co/0LaBcw2mO4