X4 PHARMACEUTICALS INC (XFOR) Top Institutional Shareholders
X4 PHARMACEUTICALS INC (XFOR) is currently reported in institutional portfolios tracked by InsiderSet based on the latest available SEC Form 13F filings for the quarter ended March 31, 2026. The institutional investors covered on this page collectively reported approximately $14.32M in XFOR holdings during the latest filing period.
Nea Management Company, Llc is currently the largest disclosed institutional shareholder of XFOR tracked by InsiderSet, reporting ownership valued at approximately $13.36M in its March 31, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $13.10M, representing an estimated loss of -1.94% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 100% of the total disclosed XFOR value among the investors covered in this analysis. Major shareholders include Nea Management Company, Llc, Acorn Capital Advisors, Llc, and several other long-term asset managers with concentrated positions in X4 PHARMACEUTICALS INC (XFOR).
This page ranks the largest institutional XFOR shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
2
Total Reported Value
$14.32M
Largest Holder
Nea Management Company, Llc
Largest Position
$13.36M
Insider Transactions (90d)
0
Latest Filing Quarter
Q1 2026
New Institutional Positions
5
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Nea Management Company, Llc | 0.76% | 3,233,743 | $13,355,359 | $13,096,659 | -$258,700 | -1.94% | |
| Acorn Capital Advisors, Llc | 0.27% | 234,039 | $966,583 | $947,858 | -$18,725 | -1.94% |
Frequently asked questions about XFOR
Who owns the most XFOR stock?
The largest holders of XFOR are typically major institutional investors such as asset managers and hedge funds reporting on Form 13F. The table above ranks tracked superinvestors by reported position size using the latest available filings for X4 PHARMACEUTICALS INC (XFOR).
Is XFOR widely held by superinvestors?
Many widely followed stocks like XFOR appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly XFOR is represented among the institutional managers we track.
What do “Current Estimated Value”, “Gain/loss Since Filing”, and “Estimated Portfolio Performance” mean?
Current Estimated Value is reported share quantity from the latest 13F times our most recent split-adjusted U.S. session close. Gain/loss Since Filing is that estimate minus the reported 13F dollar value; Estimated Portfolio Performance is that difference as a percent of the reported value. Green means the estimate is above the filing value; red means below (not purchase cost). If many filers share the same implied filing price per share, the performance % may match across rows. These are not official fund marks or live quotes.