Security key
023193105
- Security type / class
- Equity / Common Stock
- Total 13F shares
- 16,637,533
- Total 13F value
- $1,468,444,806
- Share change
- +6,130,234
- Put/Call ratio
- 39%
- SEC-reported price per share
- $88.30
- Number of holders
- 181
- Value change
- +$567,678,841
- Number of buys
- 145
- Number of sells
- 41
- Shares outstanding
- 24,301,597
Holder snapshot
7 signals
Open additional details 1 more signal available
Security identity
Names, identifiers, and filing context for this profile.
1 source field
Report period
Q2 2026
Institutions
181
Top holders
10
AMBQ full security history
Ownership snapshot
Full 13F holder table
Newer quarter: Q3 2026
Previous quarter: Q1 2026
Ambiq Micro, Inc. SEC filings
Ambiq Micro, Inc. company facts
Broader feeds
Reporting periods
Holder history for CUSIP 023193105
Recent filing periods:
Ownership snapshot
Top reported holders of AMBQ - Ambiq Micro, Inc. - Common Stock (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
Kleiner Perkins Caufield ...
Disclosed value leader
T. Rowe Price Investment ...
Comparable rows
2/15
Latest evidence
30 Jun 2026
13D/G
13F
3/4/5
Lead comparable stake: 8.2%
13 rows are not safely comparable across share classes.
13D/G row: Kleiner Perkins Caufield & Byers XVI, LLC
Showing 1-6 of 15 holder rows.
Quick read
Kleiner Perkins Caufield & Byers XVI, LLC leads the comparable SEC ownership view at 8.2%.
2 of 15 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 Kleiner Perkins Caufield & Byers XVI, LLC's linked filing trail.
Comparable ownership
Top 2
Kleiner Perkins Caufield & Byers ...
8.2%
T. Rowe Price Investment Manageme...
4.3%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-6 of 15 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| Kleiner Perkins Caufield & Byers XVI, LLC |
13D/G
KPCB XVI Associates, LLC
|
8.2%
Reported 13D/G
· 30 Sep 2025
|
$44,549,354
1,488,949 shares
|
$0 | 30 Sep 2025 |
| T. Rowe Price Investment Management, Inc. |
13D/G
13F
Company
|
4.3%
Reported 13D/G
· 30 Jun 2026
|
$88,861,500
1,006,359 shares
|
-$23,063,254 | 30 Jun 2026 |
| KPCB XVI Associates, LLC |
3/4/5
10%+ Owner
|
—
denominator unverified
|
—
1,488,949 shares
|
— | 31 Jul 2025 |
| BlackRock, Inc. |
13F
Company
|
—
denominator unverified
|
$25,744,421
1,013,161 shares
|
— | 31 Mar 2026 |
| Atreides Management, LP |
13F
Company
|
—
denominator unverified
|
$21,907,867
862,175 shares
|
— | 31 Mar 2026 |
| ALLIANCEBERNSTEIN L.P. |
13F
Company
|
—
denominator unverified
|
$19,553,793
686,098 shares
|
— | 31 Mar 2026 |
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.
13F holder rows
Institutional holders as of Q2 2026
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
181
Shares
16,637,533
Rows available
181
| Investor | Option | Weight % | Change % | SEC-reported value | * Price | Shares | Share Change | Activity | Report Period |
|---|
* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.
Compare Q2 2026 vs Q1 2026 Across Filers
Q1 2026 holders
97
Q2 2026 holders
181
Holder diff
84
| Investor | Q1 2026 Shares | Q2 2026 Shares | Share Diff | Share Chg % | Q1 2026 value | Q2 2026 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend