Security key
65443P102
- Security type / class
- Equity / Common Stock
- Total 13F shares
- 18,492,094
- Total 13F value
- $64,163,900
- Share change
- -1,073,874
- Put/Call ratio
- 156%
- SEC-reported price per share
- $3.47
- Number of holders
- 85
- Value change
- -$5,463,890
- Number of buys
- 44
- Number of sells
- 40
- Shares outstanding
- 38,121,579
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
Q3 2024
Institutions
85
Top holders
10
MASS full security history
Ownership snapshot
Full 13F holder table
Newer quarter: Q4 2024
Previous quarter: Q2 2024
908 Devices Inc. SEC filings
908 Devices Inc. company facts
Broader feeds
Reporting periods
Holder history for CUSIP 65443P102
Recent filing periods:
Ownership snapshot
Top reported holders of MASS - 908 Devices 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
ARK Investment Management...
Disclosed value leader
ARK Investment Management...
Comparable rows
15/15
Latest evidence
30 Jun 2024
13F
Lead comparable stake: 10%
Showing 1-6 of 15 holder rows.
Quick read
ARK Investment Management LLC leads the comparable SEC ownership view at 10%.
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 ARK Investment Management LLC's linked filing trail.
Comparable ownership
Top 5
ARK Investment Management LLC
10%
AMERIPRISE FINANCIAL INC
4.9%
VANGUARD GROUP INC
4.8%
BlackRock Finance, Inc.
4.4%
AWM Investment Company, Inc.
2.7%
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 |
|---|---|---|---|---|---|
| ARK Investment Management LLC |
13F
Company
|
10%
|
$20,278,802
3,937,631 shares
|
— | 30 Jun 2024 |
| AMERIPRISE FINANCIAL INC |
13F
Company
|
4.9%
|
$9,695,341
1,882,591 shares
|
— | 30 Jun 2024 |
| VANGUARD GROUP INC |
13F
Company
|
4.8%
|
$9,489,916
1,842,702 shares
|
— | 30 Jun 2024 |
| BlackRock Finance, Inc. |
13F
Company
|
4.4%
|
$8,720,001
1,693,204 shares
|
— | 30 Jun 2024 |
| AWM Investment Company, Inc. |
13F
Company
|
2.7%
|
$5,208,998
1,011,456 shares
|
— | 30 Jun 2024 |
| FRED ALGER MANAGEMENT, LLC |
13F
Company
|
2.6%
|
$5,182,121
1,006,237 shares
|
— | 30 Jun 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.
13F holder rows
Institutional holders as of Q3 2024
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
85
Shares
18,492,094
Rows available
85
| 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 Q3 2024 vs Q2 2024 Across Filers
Q2 2024 holders
89
Q3 2024 holders
85
Holder diff
-4
| Investor | Q2 2024 Shares | Q3 2024 Shares | Share Diff | Share Chg % | Q2 2024 value | Q3 2024 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend