13F

Stock

Research Solutions, Inc.

RSSS · held by 40 managers

Q1 2026Q4 2025Q3 2025Q2 2025Q1 2025

Reported value

$34.7M

Holders

40

+0 new · −0 exited

Holders’ est. mark

−$34.8K

Price effect on 4 books still in the name

Largest holder

$9.25M

NEEDHAM INVESTMENT MANAGEMENT LLC

Notable conviction

Share of each notable manager’s 13F book.

Holder count by quarter

Q3 2025Q4 2025Q1 2026

Who holds it

Notable only
InvestorSharesValueEst. markChange
NEEDHAM INVESTMENT MANAGEMENT LLC3.15M$9.25M—Held
PUNCH & ASSOCIATES INVESTMENT MANAGEMENT, INC.2.5M$7.35M—Held
Vanguard1.26M$3.72M—Held
Luxor Capital Group, LP652K$1.92M—Held
BARD ASSOCIATES INC610.4K$1.79M—Held
Topline Capital Management, LLC554.5K$1.63M—Held
PARTHENON LLC392.3K$1.15M—Held
Perritt Capital Management Inc356.8K$1.05M—Held
Rothschild Wealth LLC356.8K$1.05M—Held
Dynamic Advisor Solutions LLC289.5K$851.2K—Held
GEODE CAPITAL MANAGEMENT, LLC287.9K$846.6K—Held
Renaissance Technologies218.2K$641.5K—Held
LPL Financial LLC146.3K$430.1K—Held
BlackRock, Inc.116.6K$342.9K—Held
Navalign, LLC98.6K$289.8K—Held
Hillsdale Investment Management Inc.98K$288.1K—Held
4Thought Financial Group Inc.84.2K$247.5K—Held
DIMENSIONAL FUND ADVISORS LP77K$226.5K—Held
Integrated Quantitative Investments LLC72.5K$213.2K—Held
HighTower Advisors, LLC68.3K$200.9K—Held
State Street58.8K$172.9K—Held
NORTHERN TRUST CORP56.6K$166.5K—Held
SUSQUEHANNA INTERNATIONAL GROUP, LLP48K$141.1K—Held
GOLDMAN SACHS GROUP INC43K$126.4K—Held
Greenhaven Road Investment Management, L.P.38.5K$113.1K−$30.4KCut−$30.4K
KING LUTHER CAPITAL MANAGEMENT CORP35K$102.9K—Held
Citadel28.8K$84.6K—Held
JANE STREET GROUP, LLC25.8K$75.9K—Held
XTX Topco Ltd22K$64.8K—Held
CHARLES SCHWAB INVESTMENT MANAGEMENT INC18.1K$53.1K—Held
BANK OF AMERICA CORP /DE/11K$32.3K−$3.18KAdded$17.3K
Ancora Advisors LLC3.49K$10.3K—Held
NewEdge Advisors, LLC3.37K$9.91K—Held
UBS Group AG2.35K$6.89K—Held
MORGAN STANLEY1.93K$5.68K−$1.15KAdded$234
Tower Research Capital LLC (TRC)1.15K$3.39K—Held
BNP PARIBAS FINANCIAL MARKETS468$1.38K—Held
Allworth Financial LP104$306−$82Cut−$82
ACADIAN ASSET MANAGEMENT LLC77.6K$225—Held
WELLS FARGO & COMPANY/MN1$3—Held

Positions as of Q4 2025. 13F filings arrive up to 45 days after quarter-end and omit shorts. Values are quarter-end marks, as filed. Estimated mark is the price effect on shares still held — not realized P&L or investment advice.