Who owns SPRB
Which tracked institutional funds hold SPRB, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See SPRB company fundamentals →
Ownership as of the 2026-Q2 13F filings (latest filed 2026-09-22). 13F is disclosed up to 45 days after quarter-end, so the most recent quarter fills in over the following weeks.
How the tape is positioned
23 tracked funds added or opened SPRB while 8 trimmed or exited it between 2026-Q1 and 2026-Q2 — the tape is split. When large holders disagree on a name, the funds moving first are sometimes ahead of the story.
A prompt to read the filings, not a verdict. 13F is a quarter-end snapshot disclosed up to 45 days late; a fund adds or exits for mandate, benchmark, and timing reasons that have nothing to do with a view on the stock. This is a starting question, not a signal to trade.
Conviction spread
SPRB’s largest tracked holder by dollar value, AIGH Capital Management LLC, sizes it at 1.2% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 1.2pp conviction gap — its largest holder concentrates the name more heavily than the typical one.
Book-share is each fund’s reported value in SPRB divided by its whole reported 13F book, so it is comparable across funds of different sizes and is unaffected by stock splits. A higher share means a fund has committed more of its book to the name — a starting question about conviction, not a verdict or a signal to trade.
Institutional & insider positioning
Between 2026-Q1 and 2026-Q2, across 63 tracked filers holding SPRB, 51 increased or opened the position and 7 reduced or closed it; over the same quarter, there were no open-market insider Form 4s.
This fuses two public signals for the same quarter — how tracked institutions changed their positions and whether insiders bought or sold in the open market. It describes what was filed; it is a starting question, not a verdict or a signal to trade.
New buyers & exits
Funds opening or closing a position in SPRB between the 2026-Q1 and 2026-Q2 13F filings, and the largest changes among funds holding it in both. New buyers and exits are counted on fund presence (split-invariant); adds and trims are measured on reported value.
New buyers 12
- AIGH Capital Management LLC$14M
- ORBIMED ADVISORS LLC$11M
- Cable Car Capital, LP$3M
- Eversept Partners, LP$2M
- Affinity Asset Advisors, LLC$2M
- Stonepine Capital Management, LLC$2M
Full exits 2
- WELLINGTON MANAGEMENT GROUP LLP$1M
- Squadron Capital Management LLC$797K
Largest adds
- BlackRock, Inc.$9M
- VANGUARD CAPITAL MANAGEMENT LLC$5M
- GEODE CAPITAL MANAGEMENT, LLC$3M
- STATE STREET CORP$2M
- STEMPOINT CAPITAL LP$2M
- GOLDMAN SACHS GROUP INC$1M
Largest trims
- BALYASNY ASSET MANAGEMENT L.P.$2M
- CITADEL ADVISORS LLC$2M
- Ikarian Capital, LLC$1M
- BOOTHBAY FUND MANAGEMENT, LLC$478K
- Carlyle Group Inc.$438K
- Quinn Opportunity Partners LLC$304K
Institutional holders
One row per tracked fund, largest reported value first. “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding. Rows marked stale are from an earlier filing than the security’s latest quarter — that fund is absent from the newest snapshot (position exited, or reported under a different name).
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| AIGH Capital Management LLC new | 250,000 | $14M | 11.5% | 2026-Q2 |
| ORBIMED ADVISORS LLC new | 200,000 | $11M | 9.2% | 2026-Q2 |
| BlackRock, Inc. added | 187,836 | $10M | 8.6% | 2026-Q2 |
| MILLENNIUM MANAGEMENT LLC added | 160,981 | $9M | 7.4% | 2026-Q2 |
| Ikarian Capital, LLC | 121,356 | $7M | 5.6% | 2026-Q2 |
| VANGUARD CAPITAL MANAGEMENT LLC added | 119,331 | $6M | 5.5% | 2026-Q2 |
| Alyeska Investment Group, L.P. added | 81,671 | $4M | 3.7% | 2026-Q2 |
| GEODE CAPITAL MANAGEMENT, LLC added | 70,548 | $4M | 3.2% | 2026-Q2 |
| ADAR1 Capital Management, LLC added | 67,717 | $4M | 3.1% | 2026-Q2 |
| Cable Car Capital, LP added | 60,000 | $3M | 2.8% | 2026-Q2 |
| CITADEL ADVISORS LLC trimmed | 51,905 | $3M | 2.4% | 2026-Q2 |
| STATE STREET CORP added | 50,450 | $3M | 2.3% | 2026-Q2 |
| BOOTHBAY FUND MANAGEMENT, LLC | 42,080 | $2M | 1.9% | 2026-Q2 |
| STEMPOINT CAPITAL LP added | 41,388 | $2M | 1.9% | 2026-Q2 |
| Eversept Partners, LP new | 40,000 | $2M | 1.8% | 2026-Q2 |
| Carlyle Group Inc. | 38,620 | $2M | 1.8% | 2026-Q2 |
| GOLDMAN SACHS GROUP INC added | 32,348 | $2M | 1.5% | 2026-Q2 |
| DIADEMA PARTNERS LP added | 30,000 | $2M | 1.4% | 2026-Q2 |
| Affinity Asset Advisors, LLC new | 30,000 | $2M | 1.4% | 2026-Q2 |
| Stonepine Capital Management, LLC added | 28,795 | $2M | 1.3% | 2026-Q2 |
| Point72 Asset Management, L.P. new | 28,278 | $2M | 1.3% | 2026-Q2 |
| Quinn Opportunity Partners LLC | 26,810 | $1M | 1.2% | 2026-Q2 |
| UBS Group AG added | 23,381 | $1M | 1.1% | 2026-Q2 |
| ExodusPoint Capital Management, LP | 22,000 | $1M | 1.0% | 2026-Q2 |
| NORTHERN TRUST CORP added | 21,083 | $1M | 1.0% | 2026-Q2 |
| Rosalind Advisors, Inc. new | 20,000 | $1M | 0.9% | 2026-Q2 |
| Knott David M Jr new | 20,000 | $1M | 0.9% | 2026-Q2 |
| AMERIPRISE FINANCIAL INC new | 18,834 | $1M | 0.9% | 2026-Q2 |
| VANGUARD PORTFOLIO MANAGEMENT LLC new | 18,496 | $999K | 0.8% | 2026-Q2 |
| VANGUARD FIDUCIARY TRUST CO added | 18,361 | $991K | 0.8% | 2026-Q2 |
| BALYASNY ASSET MANAGEMENT L.P. trimmed | 12,138 | $655K | 0.6% | 2026-Q2 |
| DIMENSIONAL FUND ADVISORS LP new | 8,813 | $477K | 0.4% | 2026-Q2 |
| Persistent Asset Partners Ltd added | 7,677 | $415K | 0.4% | 2026-Q2 |
| STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM new | 7,182 | $388K | 0.3% | 2026-Q2 |
| Bank of New York Mellon Corp new | 6,779 | $366K | 0.3% | 2026-Q2 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC new | 5,896 | $318K | 0.3% | 2026-Q2 |
| RENAISSANCE TECHNOLOGIES LLC trimmed | 4,700 | $254K | 0.2% | 2026-Q2 |
| MORGAN STANLEY added | 4,411 | $238K | 0.2% | 2026-Q2 |
| Pale Fire Capital SE new | 3,818 | $206K | 0.2% | 2026-Q2 |
| RHUMBLINE ADVISERS new | 3,519 | $190K | 0.2% | 2026-Q2 |
| DEUTSCHE BANK AG\ new | 2,652 | $143K | 0.1% | 2026-Q2 |
| WELLS FARGO & COMPANY/MN new | 2,329 | $126K | 0.1% | 2026-Q2 |
| NEW YORK STATE COMMON RETIREMENT FUND new | 1,900 | $103K | 0.1% | 2026-Q2 |
| CITIGROUP INC added | 1,265 | $68K | 0.1% | 2026-Q2 |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. new | 1,252 | $68K | 0.1% | 2026-Q2 |
| JPMORGAN CHASE & CO added | 1,127 | $63K | 0.1% | 2026-Q2 |
| Lion Point Capital, LP | 1,000 | $54K | 0.0% | 2026-Q2 |
| Police & Firemen's Retirement System of New Jersey new | 864 | $47K | 0.0% | 2026-Q2 |
| BARCLAYS PLC new | 674 | $36K | 0.0% | 2026-Q2 |
| BNP PARIBAS FINANCIAL MARKETS trimmed | 453 | $24K | 0.0% | 2026-Q2 |
| Vanguard Global Advisers, LLC | 452 | $24K | 0.0% | 2026-Q2 |
| FMR LLC new | 343 | $19K | 0.0% | 2026-Q2 |
| Legal & General Group Plc new | 264 | $14K | 0.0% | 2026-Q2 |
| Ameritas Investment Partners, Inc. new | 247 | $13K | 0.0% | 2026-Q2 |
| Tower Research Capital LLC (TRC) added | 246 | $13K | 0.0% | 2026-Q2 |
| Russell Investments Group, Ltd. new | 217 | $12K | 0.0% | 2026-Q2 |
| SBI Securities Co., Ltd. new | 201 | $11K | 0.0% | 2026-Q2 |
| ROYAL BANK OF CANADA added | 166 | $8K | 0.0% | 2026-Q2 |
| Sterling Capital Management LLC new | 43 | $2K | 0.0% | 2026-Q2 |
| JONES FINANCIAL COMPANIES LLLP trimmed | 30 | $2K | 0.0% | 2026-Q2 |
| CALDWELL SUTTER CAPITAL, INC. | 13 | $702 | 0.0% | 2026-Q2 |
| Friedenthal Financial new | 7 | $378 | 0.0% | 2026-Q2 |
| Cassaday & Co Wealth Management LLC | 2 | $108 | 0.0% | 2026-Q2 |
| WELLINGTON MANAGEMENT GROUP LLP trimmed | 22,781 | $1M | 1.3% | 2026-Q1 stale (1 quarter behind) |
| Squadron Capital Management LLC trimmed | 12,200 | $797K | 0.7% | 2026-Q1 stale (1 quarter behind) |
| Resolute Capital Asset Partners LLC | 4,000 | $261K | 0.2% | 2026-Q1 stale (1 quarter behind) |
| Sound Income Strategies, LLC | 200 | $14K | 0.0% | 2026-Q1 stale (1 quarter behind) |
| Schonfeld Strategic Advisors LLC new | 24,767 | $2M | 1.8% | 2025-Q4 stale (2 quarters behind) |
| Caligan Partners LP new | 20,514 | $2M | 1.5% | 2025-Q4 stale (2 quarters behind) |
| VANGUARD GROUP INC trimmed | 17,873 | $2M | 1.3% | 2025-Q4 stale (2 quarters behind) |
| SUPERSTRING CAPITAL MANAGEMENT LP new | 12,137 | $1M | 0.9% | 2025-Q4 stale (2 quarters behind) |
| SkyView Investment Advisors, LLC new | 3,000 | $261K | 0.2% | 2025-Q4 stale (2 quarters behind) |
| BANK OF AMERICA CORP /DE/ added | 93 | $8K | 0.0% | 2025-Q4 stale (2 quarters behind) |
| OSAIC HOLDINGS, INC. new | 133 | $931 | 0.0% | 2025-Q3 stale (3 quarters behind) |
| ACADIAN ASSET MANAGEMENT LLC | 1,045,828 | $74K | 0.1% | 2025-Q2 stale (4 quarters behind) |
Ownership over time
Tracked institutional holder count and total shares held by filing quarter (independent scales). The curated-era tail and any mid-ingest latest quarter are handled honestly — a partial quarter is not drawn as a collapse.
Reading this table
Funds hold the same stock for different reasons — an index fund “holds” almost everything, an active manager sizes a name to a mandate and a benchmark, and each fund entered at its own price and time. Because 13F is filed up to 45 days after quarter-end, every row is a backward-looking snapshot; a manager may have traded since. Share-class siblings (a company’s A and C shares) are rolled up to one line so a dual-class name is never double-counted. Compare like-for-like. A large holder is not an endorsement, and a fund exiting is not a warning — this is a starting question, not a verdict.
About 13F filings
A Form 13F is a quarterly disclosure that institutional investment managers with over $100 million in US-listed equities must file with the SEC. In plain English: it is a snapshot of the long stock positions a fund held at the end of a quarter. It covers long US-listed equities only — not short positions, options, cash, or private holdings — and the funds shown are the large sample we track, not the complete 13F universe.