ALX ONCOLOGY HOLDINGS INC (ALXO) Top Institutional Shareholders
ALX ONCOLOGY HOLDINGS INC (ALXO) 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 $186.68M in ALXO holdings during the latest filing period.
Ra Capital Management, L.P. is currently the largest disclosed institutional shareholder of ALXO tracked by InsiderSet, reporting ownership valued at approximately $26.09M 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 $18.87M, representing an estimated loss of -27.68% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 78% of the total disclosed ALXO value among the investors covered in this analysis. Major shareholders include Ra Capital Management, L.P., Tcg Crossover Management, Llc, Venbio Partners Llc, and several other long-term asset managers with concentrated positions in ALX ONCOLOGY HOLDINGS INC (ALXO).
This page ranks the largest institutional ALXO 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
68
Total Reported Value
$186.68M
Largest Holder
Ra Capital Management, L.P.
Largest Position
$26.09M
Insider Transactions (90d)
0
Latest Filing Quarter
Q1 2026
New Institutional Positions
82
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Ra Capital Management, L.P. | 0.28% | 13,011,849 | $26,088,757 | $18,867,181 | -$7,221,576 | -27.68% | |
| Tcg Crossover Management, Llc | 0.75% | 13,011,849 | $26,088,757 | $18,867,181 | -$7,221,576 | -27.68% | |
| Venbio Partners Llc | 9.21% | 12,884,638 | $25,833,699 | $18,682,725 | -$7,150,974 | -27.68% | |
| Redmile Group, Llc | 1.06% | 7,964,188 | $15,968,197 | $11,548,073 | -$4,420,124 | -27.68% | |
| Blackstone Inc. | 0.05% | 5,826,544 | $11,711,353 | $8,448,489 | -$3,262,864 | -27.86% | |
| Driehaus Capital Management Llc | 0.08% | 5,734,620 | $11,497,913 | $8,315,199 | -$3,182,714 | -27.68% | |
| Vanguard Capital Management Llc | 0.00% | 4,179,736 | $8,380,371 | $6,060,617 | -$2,319,754 | -27.68% | |
| Marshall Wace, Llp | 0.01% | 3,757,216 | $7,514,432 | $5,447,963 | -$2,066,469 | -27.50% | |
| Vivo Capital, Llc | 0.53% | 3,184,713 | $6,385,350 | $4,617,834 | -$1,767,516 | -27.68% | |
| Almitas Capital Llc | 1.44% | 3,173,834 | $6,363,537 | $4,602,059 | -$1,761,478 | -27.68% | |
| 5Am Venture Management, Llc | 1.70% | 3,057,325 | $6,129,937 | $4,433,121 | -$1,696,816 | -27.68% | |
| Orbimed Advisors Llc | 0.13% | 2,866,256 | $5,746,843 | $4,156,071 | -$1,590,772 | -27.68% | |
| Adage Capital Partners Gp, L.L.C. | 0.01% | 2,000,000 | $4,010,000 | $2,900,000 | -$1,110,000 | -27.68% | |
| Millennium Management Llc | 0.00% | 1,988,559 | $3,987,061 | $2,883,411 | -$1,103,650 | -27.68% | |
| Two Sigma Investments, Lp | 0.00% | 1,587,833 | $3,183,605 | $2,302,358 | -$881,247 | -27.68% | |
| Squadron Capital Management Llc | 1.17% | 1,460,000 | $2,927,300 | $2,117,000 | -$810,300 | -27.68% | |
| Susquehanna International Group, Llp | 0.00% | 1,328,907 | $2,664,459 | $1,926,915 | -$737,544 | -27.68% | |
| Ensign Peak Advisors, Inc | 0.00% | 950,550 | $1,905,853 | $1,378,298 | -$527,556 | -27.68% | |
| Ubs Group Ag | 0.00% | 914,754 | $1,834,082 | $1,326,393 | -$507,689 | -27.68% | |
| Renaissance Technologies LLC | Jim Simons | 0.00% | 732,599 | $1,468,861 | $1,062,269 | -$406,592 | -27.68% |
| Bank Of America Corp | 0.00% | 577,783 | $1,158,455 | $837,785 | -$320,670 | -27.68% | |
| Geode Capital Management, Llc | 0.00% | 493,437 | $989,757 | $715,484 | -$274,273 | -27.71% | |
| Blackrock, Inc. | 0.00% | 447,799 | $897,836 | $649,309 | -$248,527 | -27.68% | |
| Vanguard Fiduciary Trust Co | 0.00% | 294,478 | $590,428 | $426,993 | -$163,435 | -27.68% | |
| State Street Corp | 0.00% | 175,828 | $352,535 | $254,951 | -$97,584 | -27.68% | |
| Goldman Sachs Group Inc | 0.00% | 138,593 | $277,879 | $200,960 | -$76,919 | -27.68% | |
| Northern Trust Corp | 0.00% | 136,964 | $274,613 | $198,598 | -$76,015 | -27.68% | |
| Qube Research & Technologies Ltd | 0.00% | 107,647 | $215,832 | $156,088 | -$59,744 | -27.68% | |
| Bank Of Nova Scotia | 0.00% | 105,858 | $212,245 | $153,494 | -$58,751 | -27.68% | |
| Morgan Stanley | 0.00% | 98,835 | $198,164 | $143,311 | -$54,853 | -27.68% | |
| Vanguard Portfolio Management Llc | 0.00% | 97,881 | $196,251 | $141,927 | -$54,324 | -27.68% | |
| Jane Street Group, Llc | 0.00% | 95,101 | $190,678 | $137,896 | -$52,782 | -27.68% | |
| Ieq Capital, Llc | 0.00% | 92,233 | $184,927 | $133,738 | -$51,189 | -27.68% | |
| Brevan Howard Capital Management Lp | 0.00% | 79,389 | $159,175 | $115,114 | -$44,061 | -27.68% | |
| Bridgeway Capital Management, Llc | 0.00% | 76,072 | $152,524 | $110,304 | -$42,220 | -27.68% | |
| Omers Administration Corp | 0.00% | 75,000 | $150,375 | $108,750 | -$41,625 | -27.68% | |
| Xtx Topco Ltd | 0.00% | 44,141 | $88,503 | $64,004 | -$24,499 | -27.68% | |
| Point72 Asset Management, L.P. | 0.00% | 41,095 | $82,396 | $59,588 | -$22,808 | -27.68% | |
| Graham Capital Management, L.P. | 0.00% | 37,739 | $75,667 | $54,722 | -$20,945 | -27.68% | |
| Wealth Enhancement Advisory Services, Llc | 0.00% | 37,997 | $74,854 | $55,096 | -$19,758 | -26.40% | |
| Hc Advisors, Llc | 0.03% | 22,900 | $45,915 | $33,205 | -$12,710 | -27.68% | |
| Callan Family Office, Llc | 0.00% | 22,419 | $44,950 | $32,508 | -$12,442 | -27.68% | |
| Caxton Corp | 1.04% | 20,946 | $41,996 | $30,372 | -$11,624 | -27.68% | |
| Nine Masts Capital Ltd | 0.01% | 20,623 | $41,349 | $29,903 | -$11,446 | -27.68% | |
| Jsf Financial, Llc | 0.01% | 17,500 | $35,088 | $25,375 | -$9,713 | -27.68% | |
| Moneta Group Investment Advisors Llc | 0.00% | 15,196 | $30,468 | $22,034 | -$8,434 | -27.68% | |
| Lido Advisors, Llc | 0.00% | 13,220 | $26,506 | $19,169 | -$7,337 | -27.68% | |
| Fmr Llc | 0.00% | 12,986 | $26,037 | $18,830 | -$7,207 | -27.68% | |
| Abel Hall, Llc | 0.01% | 12,598 | $25,259 | $18,267 | -$6,992 | -27.68% | |
| Beacon Pointe Advisors, Llc | 0.00% | 12,500 | $25,063 | $18,125 | -$6,938 | -27.68% |
Frequently asked questions about ALXO
Who owns the most ALXO stock?
The largest holders of ALXO 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 ALX ONCOLOGY HOLDINGS INC (ALXO).
Is ALXO widely held by superinvestors?
Many widely followed stocks like ALXO appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly ALXO 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.