DOSSIER · 13F Holders · Q2 2026
POET

POET TECHNOLOGIES INC

160 institutions still hold POET TECHNOLOGIES INC as of Q2 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 73044W302·160 13F holders·last filed Jun 30, 2026
Market cap
13F value held
$577M
visible holders
Holders
160
filers reporting
Concentration
23.57%
SUSQUEHANNA INTERNATIONAL GROUP, LLP #1
top holder share
AI Holders Summary · Q2 2026

POET Technologies' institutional register looks almost nothing like it did three months ago. CoreCap Advisors, which held 10,227 shares in March, is down to 18 — a 99.8% exit. Capstone Capital Management, which held zero shares last quarter, now holds more of the stock than anyone else: a brand-new $1.09 million stake (105,694 shares) that accounts for 51.1% of the $2.1 million in total institutional value 13F Insight tracks in POET. Woodstock Corp, the only holder to keep its position exactly unchanged, is now the second-largest at 32.8%. Six more brand-new positions opened alongside Capstone's — Optimus Capital Advisors and Archford Capital Strategies each took $102,800 stakes, with four smaller new entrants behind them — meaning 8 of the stock's 13 current holders weren't in the register at all last quarter. Farther Finance Advisors and Aventura Private Wealth both added meaningfully among existing holders (up 120% and 395% respectively, though both remain small in dollar terms).

That's the scale of the shift: Capstone opened a $1.09 million position — 105,694 shares — that instantly makes it the largest tracked institutional holder in POET, at 51.1% of the $2.1 million in total institutional value 13F Insight can see. More than half of the stock's entire tracked institutional ownership was built by one firm, from nothing, in a single quarter.

Woodstock Corp is the one name that didn't move at all: it held its 67,900-share position exactly flat, and that stability is enough to make it the second-largest holder at 32.8% of tracked value, now that CoreCap has all but disappeared from the register.

Analysis generated by 13F Insight from SEC Form 13F filing data · Q2 2026. Methodology

Top holders

Sorted by position value. Source: SEC EDGAR 13F-HR filings.

#HolderValueShares% port.Quarter
01
SUSQUEHANNA INTERNATIONAL GROUP, LLP
CIK 0001446194· Market maker
$136M13.2M0.01%Q2 2026
02
Walleye Trading LLC
CIK 0001388391
$100M9.8M0.11%Q2 2026
03
CloudAlpha Capital Management Limited/Hong Kong
CIK 0001745907
$40M3.9M1.13%Q2 2026
04
RENAISSANCE TECHNOLOGIES LLC
CIK 0001037389
$36M3.5M0.05%Q2 2026
05
IMC-Chicago, LLC
CIK 0001452861· Market maker
$28M2.7M0.01%Q2 2026
06
Elequin Capital, LP
CIK 0001810873
$25M2.4M0.75%Q2 2026
07
GOLDMAN SACHS GROUP INC
CIK 0000886982
$24M2.3M0.00%Q2 2026
08
NOMURA HOLDINGS INC
CIK 0001163653
$21M2.0M0.02%Q2 2026
09
CANTOR FITZGERALD, L. P.
CIK 0001024896
$19M1.9M0.10%Q2 2026
10
PEAK6 LLC
CIK 0001389958
$18M1.7M0.04%Q2 2026
11
CITADEL ADVISORS LLC
CIK 0001423053
$18M2.8M0.00%Q4 2025
12
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP
CIK 0001164508
$17M1.7M0.01%Q2 2026
13
NATIONAL BANK OF CANADA /FI/
CIK 0000926171
$15M1.5M0.01%Q2 2026
14
BANK OF MONTREAL /CAN/
CIK 0000927971
$15M1.5M0.00%Q2 2026
15
JANE STREET GROUP, LLC
CIK 0001595888· Market maker
$14M2.4M0.00%Q1 2026
16
MORGAN STANLEY
CIK 0000895421
$14M1.4M0.00%Q2 2026
17
Trexquant Investment LP
CIK 0001633445
$13M1.3M0.08%Q2 2026
18
Clear Street Group Inc.
CIK 0001881567
$10M982K0.03%Q2 2026
19
UBS Group AG
CIK 0001610520
$8M759K0.00%Q2 2026
20
MILLENNIUM MANAGEMENT LLC
CIK 0001273087
$7M649K0.00%Q2 2026
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