Comparable stake leader
Feis Equities LLC
SEC ownership of Cayson Acquisition Corp
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0002024203.
Disclosed value leader
BERKLEY W R CORP
Comparable rows
6/33
Latest evidence
23 Oct 2026
- Public ticker
- CAPN, CAPNR, CAPNU on Nasdaq
- Parsed ownership sources
-
13D/G, 13F, and 3/4/5
Source: Parsed SEC ownership filingsUse: Compare filing families carefully
- Largest SEC-reported holder
-
Feis Equities LLC
Ranking: Comparable ownership first, then disclosed value
- Comparable ownership rows
-
6 of 33
Meaning: Rows with safely comparable ownership %
- Latest 13D/G holder
-
Feis Equities LLC
Source: Latest parsed Schedule 13D/G stake
- Latest parsed ownership date
-
23 Oct 2026
Freshness: Most recent filing date in this holder set
- Issuer CIK
- 0002024203
- Issuer location
- New York, NY
Ownership snapshot
CIK-linked ownership evidence from parsed SEC filings.
3 signals
Issuer
Names, identifiers, and filing context for this profile.
2 identity fields
Ownership snapshot
Top shareholders of Cayson Acquisition Corp (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
Feis Equities LLC
Disclosed value leader
BERKLEY W R CORP
Comparable rows
6/33
Latest evidence
23 Oct 2026
13D/G
13F
3/4/5
Lead comparable stake: 9.8%
27 rows are not safely comparable across share classes.
13D/G row: Feis Equities LLC
Showing 1-8 of 33 holder rows.
Quick read
Feis Equities LLC leads the comparable SEC ownership view at 9.8%.
6 of 33 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens Feis Equities LLC's linked filing trail.
Comparable ownership
Top 5
Feis Equities LLC
9.8%
BERKLEY W R CORP
9.4%
MIZUHO FINANCIAL GROUP INC
9%
Polar Asset Management Partners Inc.
5.2%
AQR CAPITAL MANAGEMENT LLC
4.6%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-8 of 33 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| Feis Equities LLC |
13D/G
|
9.8%
Reported 13D/G
· 31 Dec 2025
|
$8,187,182
769,472 shares
|
+$3,867,629 | 31 Dec 2025 |
| BERKLEY W R CORP |
13D/G
13F
W.R. Berkley Corporation · Company
|
9.4%
Reported 13D/G
· 31 Mar 2026
|
$10,990,048
997,282 shares
|
+$2,578,460 | 31 Mar 2026 |
| MIZUHO FINANCIAL GROUP INC |
13D/G
|
9%
Reported 13D/G
· 30 Jun 2025
|
$7,312,710
704,500 shares
|
+$5,190 | 30 Jun 2025 |
| Polar Asset Management Partners Inc. |
13F
13D/G
Company
|
5.2%
Reported 13D/G
· 31 Mar 2026
|
$3,102,499
550,100 shares
mixed-class rows
|
— | 30 Jun 2026 |
| AQR CAPITAL MANAGEMENT LLC |
13D/G
|
4.6%
Reported 13D/G
· 31 Dec 2024
|
$3,650,590
357,901 shares
|
$0 | 31 Dec 2024 |
| WOLVERINE ASSET MANAGEMENT LLC |
13F
13D/G
Company
|
3.1%
Reported 13D/G
· 30 Sep 2026
|
$3,053,239
281,227 shares
mixed-class rows
|
— | 30 Jun 2026 |
| Yawei Cao |
3/4/5
CEO, Director, 10%+ Owner
|
—
denominator unverified
|
$8,466,631
766,905 shares
|
— | 23 Oct 2026 |
| Dahe Zhang |
3/4/5
Chief Financial Officer, 10%+ Owner
|
—
denominator unverified
|
—
960,220 shares
|
— | 15 Oct 2024 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
Forms 3/4/5 flow
Insider trading overview
No eligible buy or sell activity is available for this window. No eligible Buy or Sell transactions are available in this dataset since 04 Nov 2025.
Buys
$0
Insiders: 0
Sells
$0
Insiders: 0
Net
$0
Shares: 0
Window
Last 12 months
4 rolling buckets
Buy value
Sell value
Shares: 0
Shares: 0
| Window (months) | Buy shares | Sell shares | Buy value | Sell value | Net value |
|---|---|---|---|---|---|
| 0-3 | 0 | 0 | $0 | $0 | $0 |
| 3-6 | 0 | 0 | $0 | $0 | $0 |
| 6-9 | 0 | 0 | $0 | $0 | $0 |
| 9-12 | 0 | 0 | $0 | $0 | $0 |
Reporting owners
Insider holders from Forms 3/4/5
Showing 1-6 of 6 reporting-owner rows connected to Cayson Acquisition Corp. Open a relationship link for the CIK-to-CIK filing trail.
Rows
6
Largest Forms 3/4/5 holder
Yawei Cao
Net 12M change
$0
Latest report
23 Oct 2026
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Yawei Cao | CEO, Director, 10%+ Owner | $8,466,631 | Median | 23 Oct 2026 | ||
| Zhuge Yue | Director | Mixed | 19 Sep 2024 | |||
| Dahe Zhang | Chief Financial Officer, 10%+ Owner | Mixed | 15 Oct 2024 | |||
| Annie Liang-Zhou | Director | Mixed | 19 Sep 2024 | |||
| Raymond Xia | Director | Mixed | 19 Sep 2024 | |||
| Sanxin Yan | Director | Mixed | 10 Oct 2025 |
Recent insider transactions for Cayson Acquisition Corp
Showing up to 300 recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | SEC-reported value | SEC-reported price | Shares | Shares owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| Yawei Cao | CAPN | Ordinary Shares | Gift | -0.37% | -2,875 | 766,905 | 23 Oct 2026 | Direct |
* marks a reported price that did not pass the local price check.