908 Devices Ownership | Who Owns 908 Devices?
908 Devices Ownership Summary
908 Devices is owned by 77.17% institutional investors, 8.97% insiders, and 13.87% retail investors. First light asset management is the largest institutional shareholder, holding 16.77% of MASS shares. ARK Genomic Revolution ETF is the top mutual fund, with 5.21% of its assets in 908 Devices shares.
MASS Ownership Benchmark
| Type | Name | % Inst | % Insiders | % Retail |
|---|---|---|---|---|
| Stock | 908 Devices | 77.17% | 8.97% | 13.87% |
| Sector | Healthcare Stocks | 35.71% | 11.88% | 52.41% |
Institutional Shareholders
Top Institutional Shareholders by Total Shares
| Holder | Shares | % Holding | Value |
|---|---|---|---|
| First light asset management | 6.07M | 16.77% | $37.16M |
| Awm investment company | 5.20M | 14.36% | $31.82M |
| Ark investment management | 1.95M | 5.38% | $11.91M |
| Blackrock | 1.69M | 5.18% | $8.72M |
| Blackrock funding, inc. /de | 1.77M | 4.88% | $10.82M |
| Vanguard group | 1.47M | 4.07% | $7.72M |
| Needham investment management | 1.24M | 3.42% | $7.59M |
| First eagle investment management | 803.61K | 2.22% | $4.92M |
| Geode capital management | 695.46K | 1.92% | $4.26M |
| Granahan investment management | 695.07K | 1.92% | $4.25M |
Top Institutional Shareholders by % of Total Assets
| Holder | Shares | % Assets | Value |
|---|---|---|---|
| Awm investment company | 5.20M | 3.52% | $31.82M |
| First light asset management | 6.07M | 3.33% | $37.16M |
| Tao capital management lp | 568.98K | 2.93% | $3.48M |
| Meros investment management, lp | 361.74K | 0.96% | $2.21M |
| Highmark wealth management | 319.35K | 0.80% | $1.95M |
| Nano cap new millennium growth fund l p | 120.00K | 0.69% | $734.40K |
| Essex investment management | 491.22K | 0.48% | $3.01M |
| Needham investment management | 1.24M | 0.39% | $7.59M |
| Prescott group capital management | 361.60K | 0.22% | $2.21M |
| Granahan investment management | 695.07K | 0.21% | $4.25M |
Top Buyers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| First light asset management | 6.07M | 3.33% | 1.24M |
| Granahan investment management | 695.07K | 0.21% | 603.93K |
| Needham investment management | 1.24M | 0.39% | 470.00K |
| Vanguard fiduciary trust | 180.25K | 0.00% | 180.25K |
| First eagle investment management | 803.61K | 0.01% | 179.72K |
Top Sellers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Ameriprise financial | - | - | -1.81M |
| Eventide asset management | - | - | -1.43M |
| Fred alger management | - | - | -820.45K |
| Iron triangle partners lp | - | - | -728.87K |
| Platinum investment management | - | - | -257.42K |
New Positions
| Holder | Shares | % Assets | Change | Value |
|---|---|---|---|---|
| Vanguard fiduciary trust | 180.25K | 0.00% | 180.25K | $1.10M |
| Clarivest asset management | 129.79K | 0.07% | 129.79K | $668.41K |
| Cubist systematic strategies | 47.93K | 0.00% | 47.93K | $419.90K |
| Dynamic technology lab private | 13.90K | 0.01% | 13.90K | $85.06K |
| Jacobs levy equity management | 13.50K | 0.00% | 13.50K | $69.53K |
Sold Out
| Holder | Change |
|---|---|
| Point72 asia (singapore) pte. | -1.00 |
| Nelson, van denburg & campbell wealth management group | -5.00 |
| Rothschild investment | -20.00 |
| Srs capital advisors | -114.00 |
| Quarry lp | -197.00 |
Institutional Ownership Trends
| Date | Holdings | Change % | Shares | Change % | Ownership | Change % | Increased Position | Change % | Decreased Position | Change % |
|---|---|---|---|---|---|---|---|---|---|---|
| Mar 31, 2026 | 111 | -5.93% | 27,947,106 | 6.83% | 77 | 1.47% | 43 | -28.33% | 46 | 15.00% |
| Dec 31, 2025 | 24 | -77.57% | 3,346,961 | -86.37% | 9 | 0.20% | 10 | -80.00% | 11 | -69.44% |
| Sep 30, 2025 | 32 | -66.32% | 3,100,284 | -86.74% | 8 | 0.20% | 11 | -81.03% | 11 | -50.00% |
| Jun 30, 2025 | 101 | 9.78% | 24,343,966 | 18.04% | 67 | 2.00% | 62 | 16.98% | 23 | 15.00% |
| Mar 31, 2025 | 3 | -96.47% | 6,969,305 | -58.41% | 19 | 0.84% | 2 | -95.74% | - | -100.00% |
Top Mutual Funds Shareholders
| Holder | Shares | % Holding | Change |
|---|---|---|---|
| ARK Genomic Revolution ETF | 1.95M | 5.21% | 82.64K |
| ARK Genomic Revolution | 1.84M | 4.93% | -56.66K |
| SPDR® S&P Kensho New Economies Comps ETF | 1.70M | 4.71% | - |
| Columbia Small Cap Growth | 1.52M | 4.37% | 13.97K |
| Columbia Small Cap Growth Inst | 1.52M | 4.31% | - |
| Needham Aggressive Growth Retail | 950.00K | 2.54% | 450.00K |
| Vanguard US Total Market Shares ETF | 792.16K | 2.24% | - |
| Vanguard Total Stock Mkt Idx Inv | 782.66K | 2.09% | - |
| First Eagle Small Cap Opportunity I | 736.34K | 1.97% | 41.18K |
| First Eagle US Small Cap Strategy | 699.80K | 1.87% | 144.47K |
Recent Insider Transactions
| Date | Name | Role | Activity | Value |
|---|---|---|---|---|
| Jun 23, 2026 | Brown Christopher D. | - | Sell | $89.50K |
| Jun 23, 2026 | Knopp Kevin J. | President and CEO | Sell | $31.00K |
| Jun 25, 2026 | Knopp Kevin J. | President and CEO | Sell | $149.13K |
| Jun 24, 2026 | Knopp Kevin J. | President and CEO | Sell | $370.49K |
| Jun 23, 2026 | AWM Investment Company, Inc. | - | Sell | $27.46K |
Insider Transactions Trends
| Date | Buy | Sell |
|---|---|---|
| 2026 Q2 | - | 29 |
| 2026 Q1 | - | 4 |
| 2025 Q4 | - | 2 |
| 2025 Q3 | - | 1 |
| 2025 Q2 | 4 | 4 |
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