r/siverssemiconductors

Citadel Securities no longer holds a public short position in Sivers Semiconductors

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Citadel Securities has reduced its short position in the semiconductor company Sivers Semiconductors to below 0.5% in just a few days, and is no longer a public short position investor in the company. This can be verified on the Swedish Financial Supervisory Authority’s short selling register.

Currently, there is only one public short seller in the company. Overall, 3.86% of the total market capitalization is currently shorted.

The Swedish Financial Supervisory Authority requires short positions of 0.1% or more to be reported, and short positions of 0.5% or more to be publicly disclosed.

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u/Difficult_Goal_9160 — 15 hours ago

More shorts

More shorts. Probably expecting earnings to be bad, but most people know aren't going to be the greatest. That revenue won't start coming in until 2027.

u/Difficult_Goal_9160 — 3 days ago

Entire photonics sector seems primed to blow

With companies like poet and lumentum showing legitimate revenue, how long will it take for Sivers to do the same? I’m reasonably confident by 2027 end we should see some very promising progress but what are chances 2026 has some hope?

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u/valkilmerschin — 8 days ago
▲ 65 r/siverssemiconductors+1 crossposts

Lumilens CEO Interview and POET

Lumilens CEO (Ankur Singla) gave an interview to 'theCUBE + NYSE Wired' (https://www.youtube.com/watch?v=XWxtW6_Hfiw) which throws some interesting light on the outlook for POET.

First, Ankur said at (around 7:10): “our customer is one of the top two hyperscalers in the world”

Previously, the perception had been top three (I think this came from a LinkedIn article), so this appears to narrow the field to AWS or Microsoft.

Second, in answer to the question “So what's the top priority?” (around 18:00), Ankur talks extensively about manufacturing. I've clipped a few parts of his answer:

“So the top priority for us is actually scaling manufacturing. As you know in photonics manufacturing is as important as designing the right chips.”

“We've actually been working on both the factories aspect of it which we've been building in Singapore.”

“We are reimagining how manufacturing needs to be done and going back and redesigning the chips around it.”

“So we invented a concept called electrical optical interposer to rethink the entire manufacturing technique around scaling photonics manufacturing…”

This last comment caught my attention because of what POET said in its announcement of the Lumilens agreement: POET described the Electrical-Optical Interposer (EOI) as:

“combining alignment-free wafer-level optical engine production with next-generation optical chipsets and advanced manufacturing capabilities”

So it looks like Lumilens's EOI architecture combines its next-generation optical chipsets with the kind of alignment-free, wafer-level optical-engine manufacturing technology that POET has developed through its Optical Interposer platform. This would also appear consistent with the wording of POET's announcement that “Lumilens has placed an initial purchase order with POET for the manufacturing of EOI-based engines”

There's a strong indication here that POET's patented Optical Interposer technology is an important part of the manufacturing process for Lumilens's EOI architecture at scale.

That said, the key things that stood out to me from the interview were:

  1. how aggressively Lumilens is pursuing high-volume photonics manufacturing;
  2. that it is building manufacturing capability in Singapore and redesigning its chips around manufacturing;
  3. that POET appears to be very closely involved in the wafer-level optical-engine manufacturing part of that solution; and
  4. (and perhaps most significantly), that the end customer is apparently one of the two largest hyperscalers in the world.

The current Lumilens transceiver being shipped to the hyperscaler apparently predates the POET EOI programme but if Lumilens is now redesigning its technology around EOI specifically to solve the manufacturing/scale problem, and POET is manufacturing the resulting EOI-based engines, that looks potentially very significant for POET.

EDIT (and post-script): This interview has changed my view on the implications of Lumilens' recent $700m funding for POET's investment case. Until listening to the interview I hadn't appreciated how central the EOI initiative was to Lumilens' strategy. The scale and calibre of the funding is a significant validation of the EOI business case, of which POET appears to be a key technology partner.

The round was reportedly co-led by Atreides, Bain Capital Ventures, Meritech, Seligman Ventures and Spark Capital, with a broader investor group including Addition, Alkeon, HarbourVest, JPMorgan Private Capital, Mayfield, MVP Ventures, Qualcomm Ventures, Peak XV, Redpoint Ventures and Seifdune.

u/OkAppeal4608 — 13 days ago

SIVEF: Trend Repair Is On, But Q2 Is the Real Test

The chart has materially improved, with price above both the 8‑day EMA and the 21‑day EMA; the 8‑day is flat-to-rising and the chart has now printed “Trend Repair.” My Bottom Watch is at 6, with positive MACD, RSI around 69, and a “Starter Add” setup already active. The late‑July base has developed into a real short‑term recovery rather than just another one-day dead‑cat bounce. 

The caution flag is that RSI around 69 is getting close to overbought territory, and ATR is contracting. This can mean the move is consolidating constructively, but it can also mean don’t expect a straight line upward after a sharp run. For the first time in a while though, the chart’s burden of proof has shifted; it is now holding above rising short-term support instead of repeatedly failing beneath it. 

The notable institutional move and visible bear is still D.E. Shaw, which recently became the publicly disclosed short seller. It was reported at 0.59% of shares (about 2.09M shares), with a later reported increase to 0.62%. This is not an enormous short-squeeze setup by itself, but it is a clear public bet against the company while the tape has turned higher. 

The bottom line is the chart repair is real, D.E. Shaw remains publicly short, insiders are locked out, and August 27 is the next fundamental checkpoint. Great-looking chart momentum is not earnings results, of course, but after the long bleed, this is the most constructive technical setup SIVEF has shown in weeks.

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u/FuckTheWallStCunts — 11 days ago

Sivers ($SIVE) CEO likes post on Aeva’s ($AEVA) new Optical Connectivity / AI infrastructure expansion—potential crossover

Noticed an interesting detail on social media that might be worth keeping an eye on for both SIVE and AEVA investors.

Sowers CEO Vikram Vathulya recently liked a LinkedIn post from Soroush Salehian (CEO of Aeva) announcing Aeva's expansion into Optical Connectivity for next-gen AI infrastructure.

Sivers is already established as the light source supplier for Aeva’s core LiDAR business.

The New Segment: Aeva announced they are leveraging their high-power optics and silicon photonics for AI data center connectivity and have already secured a first customer agreement for a major hyperscaler deployment.

Given that Sivers is already a primary light source partner on the LiDAR side, it raises the question of whether this relationship could extend into Aeva's new optical connectivity push for hyperscalers.

Definitely a subtle social signal, but worth tracking to see if Sivers plays a role as Aeva scales this new AI infrastructure arm. What are your thoughts?

u/Difficult_Goal_9160 — 14 days ago

MTSI earnings transcript confirms Indium Phosphide (InP) laser shortage — what this means for SIVE & LITE

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Just saw a callout from MACOM’s ($MTSI) latest earnings call that worth highlighting if you're following silicon photonics and the AI optical supply chain.

CEO Stephen Daly specifically noted: "Customers are coming to us with urgency due to the general supply shortage of indium phosphide DFB lasers."

Why this is relevant:

Validation of the AI Bottleneck: As the industry scales toward 800G, 1.6T, and co-packaged optics (CPO), high-power continuous wave (CW) lasers and InP arrays are hitting a real structural supply-demand mismatch. MTSI explicitly using the word "urgency" shows buyers are scrambling for qualified capacity

Pricing Power for Pure-Plays: Companies with qualified InP / CW DFB laser tech—like Sivers Semiconductors ($SIVE) and Lumentum ($LITE)—stand to gain significant leverage here. If the bottleneck is as tight as MTSI suggests, players sitting on actual capacity and qualified tech going into 2027–2029 should see strong pricing power and market share gains.

Definitely worth keeping an eye on how this supply crunch plays out across the sector over the next few quarters. Anyone else tracking the laser suppliers closely?

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u/Difficult_Goal_9160 — 13 days ago