Security key
743713109
- Security type / class
- Equity / Common Stock
- Total 13F shares
- 25,872,628
- Total 13F value
- $3,041,485,874
- Share change
- -601,150
- Put/Call ratio
- 87%
- SEC-reported price per share
- $117.55
- Number of holders
- 245
- Value change
- -$68,758,795
- Number of buys
- 110
- Number of sells
- 112
- Shares outstanding
- 24,006,354
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
Q1 2018
Institutions
245
Top holders
10
PRLB full security history
Ownership snapshot
Full 13F holder table
Newer quarter: Q2 2026
Proto Labs Inc SEC filings
Proto Labs Inc company facts
Broader feeds
Reporting periods
Holder history for CUSIP 743713109
Recent filing periods:
Ownership snapshot
Top reported holders of PRLB - Proto Labs 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
BROWN CAPITAL MANAGEMENT LLC
Disclosed value leader
BROWN CAPITAL MANAGEMENT LLC
Comparable rows
15/15
Latest evidence
31 Dec 2017
13F
Lead comparable stake: 16%
Showing 1-6 of 15 holder rows.
Quick read
BROWN CAPITAL MANAGEMENT LLC leads the comparable SEC ownership view at 16%.
15 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 BROWN CAPITAL MANAGEMENT LLC's linked filing trail.
Comparable ownership
Top 5
BROWN CAPITAL MANAGEMENT LLC
16%
BlackRock Finance, Inc.
13%
VANGUARD GROUP INC
9.4%
RIVERBRIDGE PARTNERS LLC
7.4%
Janus Henderson Group Ltd.
4.9%
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 |
|---|---|---|---|---|---|
| BROWN CAPITAL MANAGEMENT LLC |
13F
Company
|
16%
|
$401,348,000
3,896,579 shares
|
— | 31 Dec 2017 |
| BlackRock Finance, Inc. |
13F
Company
|
13%
|
$314,558,000
3,053,965 shares
|
— | 31 Dec 2017 |
| VANGUARD GROUP INC |
13F
Company
|
9.4%
|
$231,565,000
2,248,199 shares
|
— | 31 Dec 2017 |
| RIVERBRIDGE PARTNERS LLC |
13F
Company
|
7.4%
|
$183,111,000
1,777,782 shares
|
— | 31 Dec 2017 |
| Janus Henderson Group Ltd. |
13F
Company
|
4.9%
|
$120,036,000
1,165,402 shares
|
— | 31 Dec 2017 |
| ArrowMark Colorado Holdings LLC |
13F
Company
|
4.4%
|
$108,060,000
1,049,129 shares
|
— | 31 Dec 2017 |
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 Q1 2018
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
245
Shares
25,872,628
Rows available
245
| 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 Q1 2018 vs Q1 2018 Across Filers
Q1 2018 holders
245
Q1 2018 holders
245
Holder diff
0
| Investor | Q1 2018 Shares | Q1 2018 Shares | Share Diff | Share Chg % | Q1 2018 value | Q1 2018 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend