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Rossby Financial’s Genmab GMAB Stock Holding History

Rossby Financial’s Portfolio GMAB Stock Details GMAB Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$99.4K Buy
3,618
+352
+11% +$9.36K 0.02% 539
2026
Q1 		$88.9K Sell
3,266
-38
-1% -$1.14K 0.02% 569
2025
Q4 		$102K Buy
+3,304
New +$103K 0.03% 411

Other funds holding GMAB

PBA
Paradigm Biocapital Advisors New York $5.34B AUM 380.18% 1-Year Est. Return
OAG
Orbis Allan Gray Hamilton, Bermuda $29.1B AUM 60.8% 1-Year Est. Return
AllianceBernstein
AllianceBernstein Nashville, Tennessee $302B AUM 26.44% 1-Year Est. Return
DM
Deerfield Management New York $9.59B AUM 113.36% 1-Year Est. Return
DTC
Deep Track Capital Greenwich, Connecticut $6.87B AUM 205.24% 1-Year Est. Return
Arrowstreet Capital
Arrowstreet Capital Boston, Massachusetts $225B AUM 49.49% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
SI
Sofinnova Investments Menlo Park, California $1.93B AUM 134.74% 1-Year Est. Return
Renaissance Technologies
Renaissance Technologies New York $72.6B AUM 54.88% 1-Year Est. Return
Two Sigma Investments
Two Sigma Investments New York $138B AUM 41.87% 1-Year Est. Return

Rossby Financial's GMAB Position: Q2 2026 in Review

Rossby Financial increased its Genmab (GMAB) stake by 11% in Q2 2026, buying an estimated $9.36K and bringing the position to 3,618 shares worth $99.4K. The position accounts for 0.02% of the portfolio, ranked #539.

Rossby Financial first reported a position in GMAB in Q4 2025 and has held it in 3 quarters since. The position peaked at $102K in Q4 2025. 292 funds tracked by Wall St. Rank hold GMAB as of Q2 2026.

  • Rossby Financial held 3,618 shares of Genmab worth $99.4K as of Q2 2026.
  • Rossby Financial bought 352 Genmab shares in Q2 2026, an estimated $9.36K.
  • Genmab made up 0.02% of Rossby Financial's portfolio in Q2 2026, its #539 holding.
  • Rossby Financial first reported a position in Genmab in Q4 2025 and has held it in 3 quarters since.
  • Rossby Financial's Genmab position peaked at $102K in Q4 2025.
  • 292 funds tracked by Wall St. Rank held Genmab as of Q2 2026.

Based on Rossby Financial's 13F filing for Q2 2026, filed 4 Aug 2026.