INOGEN INC INGN
COM · Common Stock · CUSIP 45780L104 · ISIN US45780L1044
- SectorHealth care
- IndustryOrthopedic, Prosthetic & Surgical Appliances & Supplies
- HeadquartersBeverly, MA
- FilingsSEC EDGAR
* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once ($92.5k this quarter). Holder counts are more reliable. Shares outstanding: 27.1m as of 2025-10-31, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $6.72. Options: 2 managers hold calls ($71.2k notional), 1 hold puts ($672).
Trends to Q4 2025
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q3 2022 | 145 |
| Q4 2022 | 135 |
| Q1 2023 | 151 |
| Q2 2023 | 140 |
| Q3 2023 | 129 |
| Q4 2023 | 129 |
| Q1 2024 | 130 |
| Q2 2024 | 131 |
| Q3 2024 | 134 |
| Q4 2024 | 137 |
| Q1 2025 | 129 |
| Q2 2025 | 128 |
| Q3 2025 | 131 |
| Q4 2025 | 133 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q1 2024 | 62 | 70 |
| Q2 2024 | 55 | 73 |
| Q3 2024 | 61 | 58 |
| Q4 2024 | 69 | 51 |
| Q1 2025 | 69 | 55 |
| Q2 2025 | 62 | 59 |
| Q3 2025 | 68 | 62 |
| Q4 2025 | 51 | 70 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q1 2025 | $144.5k | $9.3k | 0.06 |
| Q2 2025 | $128.4k | $0 | 0.00 |
| Q3 2025 | $193.6k | $817 | 0.00 |
| Q4 2025 | $71.2k | $672 | 0.01 |
Biggest buyers
| ARMISTICE CAPITAL, LLC | Added | +400.0k |
| DAFNA Capital Management LLC | Added | +221.4k |
| Point72 Asset Management, L.P. | New | +201.9k |
| GOLDMAN SACHS GROUP INC | Added | +161.0k |
| HSBC HOLDINGS PLC | Added | +86.5k |
| MOORE CAPITAL MANAGEMENT, LP | Added | +84.7k |
| Qube Research & Technologies Ltd | Added | +84.6k |
| CITADEL ADVISORS LLC | Added | +67.8k |
| Trexquant Investment LP | Added | +58.8k |
| FEDERATED HERMES, INC. | Added | +58.5k |
Biggest sellers
| JPMORGAN CHASE & CO | Reduced | -293.7k |
| DIMENSIONAL FUND ADVISORS LP | Reduced | -121.2k |
| JANE STREET GROUP, LLC | Reduced | -102.9k |
| PRUDENTIAL FINANCIAL INC | Reduced | -95.5k |
| GSA CAPITAL PARTNERS LLP | Reduced | -85.1k |
| Connor, Clark & Lunn Investment Management Ltd. | Reduced | -58.2k |
| ROYCE & ASSOCIATES LP | Reduced | -51.5k |
| MORGAN STANLEY | Reduced | -47.3k |
| Inspire Advisors, LLC | Sold out | -34.6k |
| HRT FINANCIAL LP | Sold out | -25.6k |
Biggest calls
| SIMPLEX TRADING, LLC | Added | $67.9k10.1k shares |
| GROUP ONE TRADING LLC | Reduced | $3.4k500 shares |
Biggest puts
| SIMPLEX TRADING, LLC | New | $672100 shares |
Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.
Major shareholders (over 5%)
Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.
| Holder | Stake |
|---|---|
| Yuwell (Hong Kong) Holdings Ltd 13G · passive investor new · filed 2025-02-24 | 9.9% |
| BlackRock, Inc. 13G · institution filed 2025-07-17 | 6.2% |
Fell to 5% or below in the last year: VANGUARD GROUP INC (0.0%, 2026-03-27)
Insider purchases and sales in Q4 2025
Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.
Officers and directors buying vs selling
Number of people, by quarter (10% owners not included)
Numbers
| Quarter | Buying | Bought | Selling | Sold | Sold under a plan |
|---|---|---|---|---|---|
| Q1 2024 | 0 | — | 0 | — | — |
| Q2 2024 | 0 | — | 1 | $85.6k | — |
| Q3 2024 | 0 | — | 0 | — | — |
| Q4 2024 | 0 | — | 0 | — | — |
| Q1 2025 | 2 | $125.2k | 0 | — | — |
| Q2 2025 | 0 | — | 0 | — | — |
| Q3 2025 | 0 | — | 0 | — | — |
| Q4 2025 | 0 | — | 0 | — | — |
None reported in Q4 2025.
Holders, Q4 2025
| Manager | Shares | Change |
|---|---|---|
| BlackRock, Inc. 0.00% of their portfolio | 1.7m $11.5m | Added +26.9k |
| VANGUARD GROUP INC 0.00% of their portfolio | 1.4m $9.6m | Reduced -9.0k |
| ARMISTICE CAPITAL, LLC 0.21% of their portfolio | 1.3m $8.5m | Added +400.0k |
| ACADIAN ASSET MANAGEMENT LLC 0.01% of their portfolio | 1.1m $7.3m | Added +16.4k |
| AMERIPRISE FINANCIAL INC 0.00% of their portfolio | 860.5k $5.8m | Added +7.8k |
| DAFNA Capital Management LLC 1.29% of their portfolio | 827.1k $5.6m | Added +221.4k |
| DIMENSIONAL FUND ADVISORS LP 0.00% of their portfolio | 711.4k $4.8m | Reduced -121.2k |
| GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 599.4k $4.0m | Reduced -9.9k |
| GOLDMAN SACHS GROUP INC 0.00% of their portfolio | 589.3k $4.0m | Added +161.0k |
| RENAISSANCE TECHNOLOGIES LLC 0.01% of their portfolio | 583.0k $3.9m | Reduced -8.4k |
| MORGAN STANLEY 0.00% of their portfolio | 558.4k $3.8m | Reduced -47.3k |
| ROYCE & ASSOCIATES LP 0.04% of their portfolio | 549.5k $3.7m | Reduced -51.5k |
| STATE STREET CORP 0.00% of their portfolio | 511.8k $3.4m | Reduced -3.8k |
| FEDERATED HERMES, INC. 0.01% of their portfolio | 485.4k $3.3m | Added +58.5k |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 469.3k $3.2m | Reduced -293.7k |
| PRUDENTIAL FINANCIAL INC 0.00% of their portfolio | 458.1k $3.1m | Reduced -95.5k |
| CSM Advisors, LLC 0.08% of their portfolio | 416.0k $2.8m | Added +51.9k |
| Nuveen, LLC 0.00% of their portfolio | 413.5k $2.8m | Reduced -23.0k |
| JACOBS LEVY EQUITY MANAGEMENT, INC 0.01% of their portfolio | 285.0k $1.9m | Reduced -10.7k |
| Qube Research & Technologies Ltd 0.00% of their portfolio | 262.9k $1.8m | Added +84.6k |
| CITADEL ADVISORS LLC 0.00% of their portfolio | 242.3k $1.6m | Added +67.8k |
| AQR CAPITAL MANAGEMENT LLC 0.00% of their portfolio | 224.6k $1.5m | Reduced -17.4k |
| PERKINS CAPITAL MANAGEMENT INC 1.16% of their portfolio | 217.7k $1.5m | Added +14.8k |
| Stokes Family Office, LLC 0.13% of their portfolio | 210.0k $1.4m | Reduced -12.6k |
| Point72 Asset Management, L.P. 0.00% of their portfolio | 201.9k $1.4m | New |
| MOORE CAPITAL MANAGEMENT, LP 0.03% of their portfolio | 200.0k $1.3m | Added +84.7k |
| Monaco Asset Management SAM 0.40% of their portfolio | 198.2k $1.3m | Added +15.0k |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP 0.00% of their portfolio | 192.8k $1.3m | Unchanged |
| NORTHERN TRUST CORP 0.00% of their portfolio | 172.6k $1.2m | Reduced -17.8k |
| TUDOR INVESTMENT CORP ET AL 0.01% of their portfolio | 151.6k $1.0m | Added +14.0k |
| Connor, Clark & Lunn Investment Management Ltd. 0.00% of their portfolio | 129.9k $872.7k | Reduced -58.2k |
| THOMPSON SIEGEL & WALMSLEY LLC 0.01% of their portfolio | 129.0k $867.0k | Reduced -2.0k |
| Bank of New York Mellon Corp 0.00% of their portfolio | 123.7k $831.4k | Reduced -3.0k |
| HSBC HOLDINGS PLC 0.00% of their portfolio | 121.0k $811.1k | Added +86.5k |
| BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio | 117.3k $788.3k | Added +31.9k |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC 0.02% of their portfolio | 115.1k $773.1k | Reduced -18.0k |
| TOCQUEVILLE ASSET MANAGEMENT L.P. 0.01% of their portfolio | 93.3k $627.3k | Added +5.5k |
| Divisadero Street Capital Management, LP 0.03% of their portfolio | 88.1k $592.3k | Unchanged |
| GSA CAPITAL PARTNERS LLP 0.05% of their portfolio | 85.9k $577.0k | Reduced -85.1k |
| BARCLAYS PLC 0.00% of their portfolio | 82.0k $550.9k | Added +3.5k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio | 77.6k $521.4k | Added +130 |
| UBS Group AG 0.00% of their portfolio | 77.3k $519.3k | Added +33.2k |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 75.9k $510.0k | Added +18.6k |
| Trexquant Investment LP 0.00% of their portfolio | 74.1k $498.1k | Added +58.8k |
| MILLENNIUM MANAGEMENT LLC 0.00% of their portfolio | 69.9k $469.7k | Reduced -15.5k |
| Campbell & CO Investment Adviser LLC 0.02% of their portfolio | 68.8k $462.4k | Added +1.1k |
| JANE STREET GROUP, LLC 0.00% of their portfolio | 65.8k $441.8k | Reduced -102.9k |
| AMERICAN CENTURY COMPANIES INC 0.00% of their portfolio | 61.5k $413.0k | Unchanged |
| TWO SIGMA ADVISERS, LP 0.00% of their portfolio | 60.8k $408.6k | Added +11.1k |
| PharVision Advisers, LLC 0.19% of their portfolio | 55.2k $371.2k | New |
| Invesco Ltd. 0.00% of their portfolio | 53.4k $358.6k | Reduced -3.8k |
| ALLIANCEBERNSTEIN L.P. 0.00% of their portfolio | 51.1k $343.5k | Unchanged |
| Quantinno Capital Management LP 0.00% of their portfolio | 51.1k $343.3k | Added +18.3k |
| PANAGORA ASSET MANAGEMENT INC 0.00% of their portfolio | 48.2k $323.9k | Added +15.7k |
| Assenagon Asset Management S.A. 0.00% of their portfolio | 44.2k $296.9k | Reduced -1.3k |
| MISSION WEALTH MANAGEMENT, LP 0.01% of their portfolio | 40.8k $274.1k | Reduced -300 |
| Engineers Gate Manager LP 0.00% of their portfolio | 38.6k $259.6k | Reduced -4.0k |
| AlphaQuest LLC 0.01% of their portfolio | 37.2k $250.2k | Added +5.1k |
| TWO SIGMA INVESTMENTS, LP 0.00% of their portfolio | 36.2k $243.4k | Reduced -17.7k |
| RHUMBLINE ADVISERS 0.00% of their portfolio | 32.7k $219.8k | Reduced -4.3k |
| Jump Financial, LLC 0.00% of their portfolio | 29.8k $200.3k | New |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio | 29.0k $196.0k | Reduced -800 |
| R Squared Ltd 0.09% of their portfolio | 28.8k $193.2k | New |
| PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO 0.00% of their portfolio | 28.0k $188.4k | Unchanged |
| Tidal Investments LLC 0.00% of their portfolio | 27.0k $181.7k | Added +1.2k |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 26.7k $179.2k | Added +8.4k |
| Corient Private Wealth LP 0.00% of their portfolio | 25.0k $167.7k | New |
| Walleye Capital LLC 0.00% of their portfolio | 24.7k $166.0k | Reduced -6.2k |
| STATE OF WISCONSIN INVESTMENT BOARD 0.00% of their portfolio | 24.2k $162.8k | Reduced -9.4k |
| XTX Topco Ltd 0.00% of their portfolio | 22.2k $149.1k | Reduced -5.9k |
| OCCUDO QUANTITATIVE STRATEGIES LP 0.01% of their portfolio | 21.6k $145.4k | New |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.00% of their portfolio | 21.4k $143.9k | Reduced -8.4k |
| Clark Asset Management, LLC 0.01% of their portfolio | 21.4k $143.7k | New |
| AlphaCore Capital LLC 0.00% of their portfolio | 20.6k $138.7k | Added +23 |
| ALGERT GLOBAL LLC 0.00% of their portfolio | 19.6k $131.8k | Reduced -1.5k |
| Russell Investments Group, Ltd. 0.00% of their portfolio | 19.5k $131.3k | Added +2.5k |
| DEUTSCHE BANK AG\ 0.00% of their portfolio | 17.1k $115.0k | New |
| Squarepoint Ops LLC 0.00% of their portfolio | 16.7k $112.1k | Reduced -19.6k |
| BOOTHBAY FUND MANAGEMENT, LLC 0.00% of their portfolio | 12.8k $86.0k | New |
| MetLife Investment Management, LLC 0.00% of their portfolio | 12.7k $85.3k | Added +5.3k |
| PRELUDE CAPITAL MANAGEMENT, LLC 0.01% of their portfolio | 12.7k $85.1k | Added +2.6k |
| SUSQUEHANNA FUNDAMENTAL INVESTMENTS, LLC 0.00% of their portfolio | 12.5k $83.9k | Reduced -11.7k |
| Integrated Wealth Concepts LLC 0.00% of their portfolio | 11.7k $78.6k | Reduced -610 |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. 0.00% of their portfolio | 11.0k $74.2k | Reduced -11 |
| SHERBROOKE PARK ADVISERS LLC 0.19% of their portfolio | 11.0k $73.6k | New |
| INTECH INVESTMENT MANAGEMENT LLC 0.00% of their portfolio | 10.7k $71.8k | Unchanged |
| Brevan Howard Capital Management LP 0.00% of their portfolio | 10.5k $70.3k | Reduced -13.8k |
| IEQ CAPITAL, LLC 0.00% of their portfolio | 10.2k $68.9k | Reduced -9.7k |
| FMR LLC 0.00% of their portfolio | 10.1k $67.9k | Reduced -312 |
| CWM, LLC 0.00% of their portfolio | 9.8k $66.0k | Reduced -3.0k |
| Torren Management, LLC 0.03% of their portfolio | 7.6k $51.4k | First filing |
| NEW YORK STATE COMMON RETIREMENT FUND 0.00% of their portfolio | 7.4k $49.7k | Unchanged |
| Police & Firemen's Retirement System of New Jersey 0.00% of their portfolio | 7.0k $47.3k | Unchanged |
| Quarry LP 0.00% of their portfolio | 4.1k $27.4k | New |
| Leonteq Securities AG 0.00% of their portfolio | 2.6k $17.6k | Reduced -306 |
| Legal & General Group Plc 0.00% of their portfolio | 2.1k $14.3k | Unchanged |
| Pinnacle Wealth Planning Services, Inc. 0.00% of their portfolio | 2.0k $13.6k | New |
| Tower Research Capital LLC (TRC) 0.00% of their portfolio | 1.7k $11.6k | Added +258 |
| Ameritas Investment Partners, Inc. 0.00% of their portfolio | 1.6k $10.7k | Unchanged |
| Farther Finance Advisors, LLC 0.00% of their portfolio | 1.6k $10.5k | Reduced -57 |