Research Solutions, Inc. (RSSS) Ownership
RSSS ownership summary
as of October 18, 2026- Institutions
- 44.3% of shares outstanding
- Insiders
- 13.78% of shares outstanding
- Shares outstanding
- 33.8M
- Float
- 25.9M shares available to trade
- Short interest
- 0.18% 58K shares short
- Days to cover
- 1.12 short interest down 20.0% vs prior month
- Institutions 44.32%
- Insiders 13.78%
- Other investors 41.90%
RSSS top institutional holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | Needham Investment Management, LLC | 9.34% | 3.2M | $6.3M | — | June 30, 2026 |
| 2 | Punch & Associates Inv Mgmt Inc | 7.56% | 2.6M | $5.1M | — | June 30, 2026 |
| 3 | Vanguard Capital Management, LLC | 3.40% | 1.1M | $2.3M | +13,549 (+1.2%) | June 30, 2026 |
| 4 | Luxor Capital Group, LP | 1.93% | 652K | $1.3M | — | June 30, 2026 |
| 5 | Bard Associates Inc | 1.80% | 609K | $1.2M | +577 (+0.1%) | June 30, 2026 |
| 6 | Parthenon Capital Management LLC | 1.16% | 392K | $784,568 | — | June 30, 2026 |
| 7 | Dynamic Advisor Solutions LLC | 1.08% | 366K | $731,198 | +47,907 (+15.1%) | June 30, 2026 |
| 8 | North Star Investment Management Corp | 1.06% | 357K | $714,000 | +23,482 (+7.0%) | June 30, 2026 |
| 9 | Geode Capital Management, LLC | 0.87% | 295K | $590,212 | −40,053 (−12.0%) | June 30, 2026 |
| 10 | Navalign, LLC | 0.58% | 196K | $392,252 | −55,000 (−21.9%) | June 30, 2026 |
| 11 | Vanguard Fiduciary Trust Co | 0.52% | 174K | $347,762 | +22,516 (+14.9%) | June 30, 2026 |
| 12 | LPL Financial Corp | 0.43% | 146K | $292,614 | — | June 30, 2026 |
| 13 | BlackRock Inc | 0.42% | 143K | $286,576 | +23,050 (+19.2%) | June 30, 2026 |
| 14 | Renaissance Technologies Corp | 0.31% | 106K | $211,980 | −70,910 (−40.1%) | June 30, 2026 |
| 15 | 4Thought Financial Group Inc. | 0.25% | 83K | $166,812 | — | June 30, 2026 |
| 16 | Dimensional Fund Advisors, Inc. | 0.24% | 82K | $164,884 | +4,480 (+5.7%) | June 30, 2026 |
| 17 | Integrated Quantitative Investments LLC | 0.21% | 72K | $145,000 | — | June 30, 2026 |
| 18 | Northern Trust Corp | 0.18% | 61K | $122,084 | +4,423 (+7.8%) | June 30, 2026 |
| 19 | State Street Corp | 0.17% | 59K | $117,614 | — | June 30, 2026 |
| 20 | Sentinus, LLC | 0.15% | 51K | $102,600 | — | June 30, 2026 |
Value at the latest close. Change = shares bought or sold in the latest quarterly filing (13F). In the top 20, 8 holders added 140K shares and 3 cut 166K.
RSSS top mutual fund and ETF holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | Needham Aggressive Growth Retail | 9.34% | 3.2M | $6.3M | — | September 30, 2026 |
| 2 | Vanguard MStar Total Stk Mkt Idx Invest | 2.45% | 826K | $1.7M | — | August 31, 2026 |
| 3 | North Star Micro Cap I | 1.21% | 410K | $820,000 | +53,000 (+14.8%) | September 30, 2026 |
| 4 | Perritt MicroCap Opportunities Investor | 0.90% | 306K | $611,036 | — | December 31, 2025 |
| 5 | Adirondack Small Cap | 0.58% | 197K | $393,958 | — | June 30, 2026 |
| 6 | Fidelity Extended Market Index | 0.40% | 135K | $270,806 | −728 (−0.5%) | August 31, 2026 |
| 7 | iShares Micro-Cap ETF | 0.26% | 88K | $176,986 | −610 (−0.7%) | September 30, 2026 |
| 8 | Fidelity Total Market Index | 0.14% | 46K | $91,264 | — | August 31, 2026 |
| 9 | Fidelity Series Total Market Index | 0.11% | 38K | $76,848 | — | August 31, 2026 |
| 10 | Vanguard MStar Inst Ttl StkMktIdxInstlPl | 0.06% | 19K | $37,616 | — | August 31, 2026 |
| 11 | Schwab Total Stock Market Index | 0.05% | 18K | $36,138 | — | August 31, 2026 |
| 12 | Fidelity Nasdaq Composite Index | 0.05% | 17K | $33,946 | — | August 31, 2026 |
| 13 | Vanguard Balanced Index Inv | 0.04% | 15K | $29,696 | — | August 31, 2026 |
| 14 | Dimensional Global Small Coms USD Acc | 0.04% | 12K | $24,588 | — | August 31, 2026 |
| 15 | Dimensional Gl Cor Eq LC ESG Sc USD A | 0.02% | 7,475 | $14,950 | — | August 31, 2026 |
| 16 | 1290 VT Micro Cap K | 0.02% | 6,306 | $12,612 | — | August 31, 2026 |
| 17 | DFA US Vector Equity I | 0.02% | 5,649 | $11,298 | — | August 31, 2026 |
| 18 | Vanguard U.S. Eq Idx £ Acc | 0.02% | 5,356 | $10,712 | — | August 31, 2026 |
| 19 | Dimensional US Vector Equity ETF | 0.01% | 4,934 | $9,868 | — | September 24, 2026 |
| 20 | Dimensional Global Core Equity USD Acc | 0.01% | 4,891 | $9,782 | — | August 31, 2026 |
Funds report holdings monthly or quarterly; dates differ by fund.
RSSS insider transactions
latest 17| Date | Name | Transaction | Price | Shares | Value |
|---|---|---|---|---|---|
| 2024-03-22 | Peter Derycz | Sell | $2.85 | 2,576 | $7,342 |
| 2024-03-20 | Peter Derycz | Sell | $2.87 | 40,402 | $115,954 |
| 2024-01-24 | Peter Derycz | Sell | $2.70 | 61 | $165 |
| 2024-01-22 | Peter Derycz | Sell | $2.63 | 30,262 | $79,589 |
| 2024-01-18 | Peter Derycz | Sell | $2.60 | 20,113 | $52,294 |
| 2024-01-16 | Peter Derycz | Sell | $2.60 | 22 | $57 |
| 2024-01-12 | Peter Derycz | Sell | $2.60 | 636 | $1,654 |
| 2024-01-10 | Peter Derycz | Sell | $2.60 | 8,756 | $22,766 |
| 2024-01-08 | Peter Derycz | Sell | $2.71 | 15,000 | $40,650 |
| 2024-01-04 | Peter Derycz | Sell | $2.60 | 476 | $1,238 |
| 2024-01-02 | Peter Derycz | Sell | $2.60 | 1,353 | $3,518 |
| 2023-12-28 | Peter Derycz | Sell | $2.60 | 383 | $996 |
| 2023-12-26 | Peter Derycz | Sell | $2.61 | 9,711 | $25,346 |
| 2023-12-22 | Peter Derycz | Sell | $2.64 | 27,814 | $73,429 |
| 2023-12-20 | Peter Derycz | Sell | $2.68 | 13,893 | $37,233 |
| 2023-11-10 | Peter Derycz | Sell | $2.34 | 18,000 | $42,120 |
| 2023-09-18 | Bristol Investment Fund Ltd | Sell | $2.45 | 1,150,000 | $2.8M |
Reported trades by company officers, directors and other filers (including disclosures by members of Congress where EODHD lists them). "—" where the filing gives no share count.
RSSS shares outstanding
Year-end shares outstanding, adjusted for splits.
Who owns RSSS
Institutional investors own 44.3% of Research Solutions's shares and insiders 13.78%. The largest holder is Needham Investment Management, LLC with 9.34% of the shares (3.2M), as of June 30, 2026. Among the top 20 institutions, 8 added shares and 3 reduced their stake in the latest filings. Short interest is 0.18% of the float, or 1.12 days of average trading volume. The share count rose 80.1% since 2014.
Related: RSSS analyst forecast, RSSS key metrics. See the RSSS stock overview for the latest quote and news.
RSSS ownership FAQ
Who owns the most Research Solutions stock?
The largest shareholders of Research Solutions are Needham Investment Management, LLC (9.34%), Punch & Associates Inv Mgmt Inc (7.56%), Vanguard Capital Management, LLC (3.40%), Luxor Capital Group, LP (1.93%), Bard Associates Inc (1.80%).
What percentage of Research Solutions is owned by institutions?
Institutions hold 44.3% of Research Solutions's shares outstanding; insiders hold 13.78%.
Which funds own Research Solutions?
The largest fund holders of Research Solutions are Needham Aggressive Growth Retail (9.34%), Vanguard MStar Total Stk Mkt Idx Invest (2.45%), North Star Micro Cap I (1.21%), Perritt MicroCap Opportunities Investor (0.90%), Adirondack Small Cap (0.58%).
What is Research Solutions's short interest?
58K shares of Research Solutions were sold short, 0.18% of the float; at the average daily volume it would take 1.12 days to cover.
Are insiders buying or selling Research Solutions?
Of the latest 17 reported insider transactions in Research Solutions (since September 18, 2023), 0 were purchases and 17 were sales.
How many shares of Research Solutions are outstanding?
Research Solutions has 33.8M shares outstanding, of which 25.9M are in the public float.