Vault-13

IMMUNOGEN INC IMGN

COM · Common Stock · CUSIP 45253H101 · ISIN US45253H1014

278 institutional holders +11 vs Q2 2023
246,677,527246.7m shares reported held*
$3.9bnreported value*
45 new 120 added 72 reduced 34 sold out net bought ≈ $298.4m (+18.1m shares)

* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once ($1.2m this quarter). Holder counts are more reliable. Implied quarter-end price ≈ $15.91. Options: 21 managers hold calls ($55.1m notional), 13 hold puts ($33.2m).

Trends to Q3 2023

Institutional holders

Managers reporting a position, each quarter

0100200300Q3 22: 222Q4 22: 204Q1 23: 192Q2 23: 267Q3 23: 278278Q3 22Q4 22Q1 23Q2 23Q3 23
Numbers
QuarterHolders
Q3 2022222
Q4 2022204
Q1 2023192
Q2 2023267
Q3 2023278

Buyers vs sellers

Managers adding to or starting a position, vs cutting or selling out

Bought or addedCut or sold out
2000200Q4 22: 91 bought or addedQ4 22: 112 cut or sold outQ4 22Q1 23: 84 bought or addedQ1 23: 87 cut or sold outQ1 23Q2 23: 166 bought or addedQ2 23: 98 cut or sold outQ2 23Q3 23: 165 bought or addedQ3 23: 106 cut or sold outQ3 23
Numbers
QuarterBought or addedCut or sold out
Q4 202291112
Q1 20238487
Q2 202316698
Q3 2023165106

Calls vs puts

Options held, notional value, last 4 quarters. P/C = puts ÷ calls

CallsPuts
$0$20m$40m$60m$80mQ4 22 calls: $6.8mQ4 22 puts: $3.4mQ4 22P/C 0.51Q1 23 calls: $18.4mQ1 23 puts: $6.4mQ1 23P/C 0.35Q2 23 calls: $69.3mQ2 23 puts: $35.8mQ2 23P/C 0.52Q3 23 calls: $55.1mQ3 23 puts: $33.2mQ3 23P/C 0.60
Numbers
QuarterCallsPutsP/C
Q4 2022$6.8m$3.4m0.51
Q1 2023$18.4m$6.4m0.35
Q2 2023$69.3m$35.8m0.52
Q3 2023$55.1m$33.2m0.60

Biggest buyers

RA CAPITAL MANAGEMENT, L.P. Added +10,992,330+11.0m
VANGUARD GROUP INC Added +3,583,129+3.6m
WELLINGTON MANAGEMENT GROUP LLP Added +3,506,098+3.5m
JANUS HENDERSON GROUP PLC Added +2,185,028+2.2m
NORGES BANK Added +1,890,089+1.9m
STATE STREET CORP Added +1,612,938+1.6m
PRICE T ROWE ASSOCIATES INC /MD/ Added +1,584,109+1.6m
MORGAN STANLEY Added +1,490,486+1.5m
JPMORGAN CHASE & CO Added +1,336,005+1.3m
Sofinnova Investments, Inc. Added +1,217,884+1.2m

Biggest sellers

Point72 Asset Management, L.P. Sold out -8,712,142-8.7m
DEUTSCHE BANK AG\ Reduced -3,079,661-3.1m
BAKER BROS. ADVISORS LP Sold out -1,520,097-1.5m
FIRST MANHATTAN CO. LLC. Reduced -1,424,100-1.4m
MAVERICK CAPITAL LTD Reduced -1,268,371-1.3m
MILLENNIUM MANAGEMENT LLC Reduced -1,092,149-1.1m
Balyasny Asset Management L.P. Reduced -1,020,659-1.0m
Connor, Clark & Lunn Investment Management Ltd. Sold out -909,595-909.6k
Man Group plc Sold out -682,227-682.2k
BlackRock Inc. Reduced -631,127-631.1k

Biggest calls

BOOTHBAY FUND MANAGEMENT, LLC Added $17.2m1.1m shares
SUSQUEHANNA INTERNATIONAL GROUP, LLP Added $6.0m376.8k shares
Ikarian Capital, LLC Reduced $5.7m3.6k shares
CITADEL ADVISORS LLC Reduced $4.5m285.4k shares
SILVERARC CAPITAL MANAGEMENT, LLC New $4.0m250.0k shares
JANE STREET GROUP, LLC Reduced $3.4m215.0k shares
GROUP ONE TRADING LLC Reduced $3.3m205.9k shares
LMR Partners LLP Reduced $3.2m200.0k shares
UBS Group AG Added $2.1m133.8k shares
SIMPLEX TRADING, LLC Added $1.7m109.7k shares

Biggest puts

JANE STREET GROUP, LLC Added $8.8m552.2k shares
SUSQUEHANNA INTERNATIONAL GROUP, LLP Added $8.2m519.5k shares
GROUP ONE TRADING LLC Added $6.6m413.3k shares
CITADEL ADVISORS LLC Added $4.2m266.5k shares
SIMPLEX TRADING, LLC Reduced $2.9m180.2k shares
MOORE CAPITAL MANAGEMENT, LP New $1.6m100.0k shares
PEAK6 Investments LLC Added $276.1k17.4k shares
Caption Management, LLC Reduced $219.0k13.8k shares
UBS Group AG Unchanged $204.7k12.9k shares
Walleye Trading LLC Added $195.2k12.3k shares

Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.

Holders, Q3 2023

#ManagerLocationShares Value% of their portfolioChangeShares change
1 VANGUARD GROUP INC 0.01% of their portfolio Valley Forge, PA 24,482,15524.5m $388.5m $388.5m 0.01% Added +3.6m +3,583,129
2 BlackRock Inc. 0.01% of their portfolio New York, NY 20,273,85920.3m $321.7m $321.7m 0.01% Reduced -631.1k -631,127
3 JANUS HENDERSON GROUP PLC 0.18% of their portfolio LONDON, X0 17,684,81617.7m $280.6m $280.6m 0.18% Added +2.2m +2,185,028
4 Redmile Group, LLC 13.22% of their portfolio LARKSPUR, CA 17,503,41717.5m $277.8m $277.8m 13.22% Reduced -227.0k -227,000
5 RA CAPITAL MANAGEMENT, L.P. 4.16% of their portfolio BOSTON, MA 13,322,28813.3m $211.4m $211.4m 4.16% Added +11.0m +10,992,330
6 WELLINGTON MANAGEMENT GROUP LLP 0.04% of their portfolio Boston, MA 13,258,99713.3m $210.4m $210.4m 0.04% Added +3.5m +3,506,098
7 STATE STREET CORP 0.01% of their portfolio BOSTON, MA 9,551,8529.6m $151.6m $151.6m 0.01% Added +1.6m +1,612,938
8 D. E. Shaw & Co., Inc. 0.18% of their portfolio New York, NY 6,995,2397.0m $111.0m $111.0m 0.18% Added +714.7k +714,723
9 Fairmount Funds Management LLC 11.32% of their portfolio WEST CONSHOHOCKEN, PA 5,929,5925.9m $94.1m $94.1m 11.32% Reduced -100.0k -100,000
10 FMR LLC 0.01% of their portfolio BOSTON, MA 5,788,5555.8m $91.9m $91.9m 0.01% Added +175.8k +175,813
11 GEODE CAPITAL MANAGEMENT, LLC 0.01% of their portfolio BOSTON, MA 4,899,9754.9m $77.8m $77.8m 0.01% Added +147.4k +147,425
12 MORGAN STANLEY 0.01% of their portfolio NEW YORK, NY 4,829,0914.8m $76.6m $76.6m 0.01% Added +1.5m +1,490,486
13 PRICE T ROWE ASSOCIATES INC /MD/ 0.01% of their portfolio BALTIMORE, MD 3,906,3703.9m $62.0m $62.0m 0.01% Added +1.6m +1,584,109
14 Artisan Partners Limited Partnership 0.10% of their portfolio Milwaukee, WI 3,724,5833.7m $59.1m $59.1m 0.10% Reduced -1.3k -1,338
15 Pictet Asset Management Holding SA 0.07% of their portfolio CAROUGE, V8 3,708,1393.7m $58.8m $58.8m 0.07% First filing
16 Nuveen Asset Management, LLC 0.02% of their portfolio CHICAGO, IL 3,108,0393.1m $49.3m $49.3m 0.02% Added +465.5k +465,505
17 Hood River Capital Management LLC 1.55% of their portfolio PALM BEACH GARDENS, FL 3,044,4853.0m $48.3m $48.3m 1.55% Added +60.8k +60,814
18 Boxer Capital, LLC 2.50% of their portfolio San Diego, CA 2,961,0003.0m $47.0m $47.0m 2.50% Unchanged
19 MAVERICK CAPITAL LTD 0.93% of their portfolio DALLAS, TX 2,518,5272.5m $40.0m $40.0m 0.93% Reduced -1.3m -1,268,371
20 VOLORIDGE INVESTMENT MANAGEMENT, LLC 0.20% of their portfolio JUPITER, FL 2,512,2512.5m $39.9m $39.9m 0.20% Added +481.3k +481,296
21 Woodline Partners LP 0.45% of their portfolio San Francisco, CA 2,433,1612.4m $38.6m $38.6m 0.45% Reduced -114.5k -114,478
22 NORTHERN TRUST CORP 0.01% of their portfolio CHICAGO, IL 2,370,8642.4m $37.6m $37.6m 0.01% Reduced -25.2k -25,182
23 JPMORGAN CHASE & CO 0.00% of their portfolio NEW YORK, NY 2,198,4272.2m $34.9m $34.9m 0.00% Added +1.3m +1,336,005
24 Nicholas Investment Partners, LP 2.45% of their portfolio RANCHO SANTA FE, CA 2,067,5612.1m $32.8m $32.8m 2.45% Added +843.4k +843,434
25 NORGES BANK 0.01% of their portfolio OSLO, Q8 2,055,0892.1m $32.6m $32.6m 0.01% Added +1.9m +1,890,089
26 Sofinnova Investments, Inc. 2.28% of their portfolio Menlo Park, CA 2,045,2022.0m $32.5m $32.5m 2.28% Added +1.2m +1,217,884
27 Avidity Partners Management LP 1.23% of their portfolio DALLAS, TX 1,917,9071.9m $30.4m $30.4m 1.23% Reduced -79.9k -79,893
28 CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.01% of their portfolio SAN FRANCISCO, CA 1,830,5751.8m $29.1m $29.1m 0.01% Added +20.1k +20,113
29 EMERALD ADVISERS, LLC 1.39% of their portfolio LEOLA, PA 1,811,3061.8m $28.7m $28.7m 1.39% Added +827.6k +827,609
30 Bank of New York Mellon Corp 0.01% of their portfolio NEW YORK, NY 1,796,1101.8m $28.5m $28.5m 0.01% Added +703.1k +703,117
31 TWO SIGMA INVESTMENTS, LP 0.07% of their portfolio NEW YORK, NY 1,628,2171.6m $25.8m $25.8m 0.07% Added +812.7k +812,680
32 MILLENNIUM MANAGEMENT LLC 0.03% of their portfolio NEW YORK, NY 1,605,7141.6m $25.5m $25.5m 0.03% Reduced -1.1m -1,092,149
33 LORD, ABBETT & CO. LLC 0.04% of their portfolio JERSEY CITY, NJ 1,518,9001.5m $24.1m $24.1m 0.04% Reduced -319.1k -319,090
34 Artal Group S.A. 1.05% of their portfolio LUXEMBOURG, N4 1,512,1131.5m $24.0m $24.0m 1.05% Added +746.6k +746,616
35 TANG CAPITAL MANAGEMENT LLC 3.36% of their portfolio SAN DIEGO, CA 1,500,0001.5m $23.8m $23.8m 3.36% Added +200.0k +200,000
36 EMERALD MUTUAL FUND ADVISERS TRUST 1.40% of their portfolio LEOLA, PA 1,466,0631.5m $23.3m $23.3m 1.40% Added +649.1k +649,069
37 Driehaus Capital Management LLC 0.30% of their portfolio Chicago, IL 1,440,0521.4m $22.9m $22.9m 0.30% Added +263.9k +263,922
38 QVT Financial LP 1.30% of their portfolio New York, NY 1,375,9001.4m $21.8m $21.8m 1.30% Unchanged
39 SILVERARC CAPITAL MANAGEMENT, LLC 7.73% of their portfolio BOSTON, MA 1,307,4351.3m $20.7m $20.7m 7.73% Reduced -112.6k -112,565
40 EVENTIDE ASSET MANAGEMENT, LLC 0.37% of their portfolio Boston, MA 1,300,0001.3m $20.6m $20.6m 0.37% Unchanged
41 TWO SIGMA ADVISERS, LP 0.05% of their portfolio NEW YORK, NY 1,294,5181.3m $20.5m $20.5m 0.05% Added +108.4k +108,400
42 CITADEL ADVISORS LLC 0.02% of their portfolio MIAMI, FL 1,287,5421.3m $20.4m $20.4m 0.02% Added +359.3k +359,302
43 GOLDMAN SACHS GROUP INC 0.00% of their portfolio NEW YORK, NY 1,239,0991.2m $19.7m $19.7m 0.00% Reduced -372.0k -372,003
44 DIMENSIONAL FUND ADVISORS LP 0.01% of their portfolio AUSTIN, TX 1,180,7441.2m $18.7m $18.7m 0.01% Reduced -8.5k -8,475
45 Candriam S.C.A. 0.13% of their portfolio STRASSEN, N4 1,122,5881.1m $17.8m $17.8m 0.13% Added +130.0k +130,006
46 PANAGORA ASSET MANAGEMENT INC 0.11% of their portfolio BOSTON, MA 1,098,4171.1m $17.4m $17.4m 0.11% Reduced -19.6k -19,552
47 Invesco Ltd. 0.00% of their portfolio ATLANTA, GA 1,086,1681.1m $17.2m $17.2m 0.00% Added +50.5k +50,463
48 PINNACLE ASSOCIATES LTD 0.30% of their portfolio NEW YORK, NY 1,016,1561.0m $16.1m $16.1m 0.30% Reduced -193.8k -193,767
49 PRINCIPAL FINANCIAL GROUP INC 0.01% of their portfolio DES MOINES, IA 984,664984.7k $15.6m $15.6m 0.01% Reduced -3.2k -3,222
50 SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.02% of their portfolio BALA CYNWYD, PA 974,887974.9k $15.5m $15.5m 0.02% Reduced -340.8k -340,771
51 JANE STREET GROUP, LLC 0.02% of their portfolio NEW YORK, NY 917,764917.8k $14.6m $14.6m 0.02% Added +38.1k +38,064
52 Ensign Peak Advisors, Inc 0.03% of their portfolio SALT LAKE CITY, UT 875,868875.9k $13.9m $13.9m 0.03% Added +289.3k +289,275
53 PFM Health Sciences, LP 0.66% of their portfolio SAN FRANCISCO, CA 869,889869.9k $13.8m $13.8m 0.66% New
54 Rock Springs Capital Management LP 0.32% of their portfolio Baltimore, MD 759,365759.4k $12.1m $12.1m 0.32% Added +646.7k +646,745
55 RENAISSANCE TECHNOLOGIES LLC 0.02% of their portfolio NEW YORK, NY 734,640734.6k $11.7m $11.7m 0.02% Reduced -483.4k -483,400
56 Altium Capital Management LLC 6.66% of their portfolio NEW YORK, NY 725,000725.0k $11.5m $11.5m 6.66% Added +240.0k +240,000
57 Parkman Healthcare Partners LLC 2.09% of their portfolio STAMFORD, CT 717,920717.9k $11.4m $11.4m 2.09% Reduced -122.9k -122,891
58 Rhenman & Partners Asset Management AB 1.20% of their portfolio Stockholm, V7 700,000700.0k $11.1m $11.1m 1.20% Reduced -50.0k -50,000
59 AMERICAN CENTURY COMPANIES INC 0.01% of their portfolio KANSAS CITY, MO 699,116699.1k $11.1m $11.1m 0.01% Reduced -1.2k -1,207
60 Granahan Investment Management, LLC 0.39% of their portfolio WALTHAM, MA 681,377681.4k $10.8m $10.8m 0.39% Added +254.6k +254,625
61 Man Group plc 0.03% of their portfolio LONDON, X0 663,647663.6k $10.5m $10.5m 0.03% New
62 Rafferty Asset Management, LLC 0.05% of their portfolio New York, NY 566,985567.0k $9.0m $9.0m 0.05% Added +229.7k +229,699
63 BANK OF AMERICA CORP /DE/ 0.00% of their portfolio CHARLOTTE, NC 541,802541.8k $8.6m $8.6m 0.00% Added +127.6k +127,624
64 Hennion & Walsh Asset Management, Inc. 0.53% of their portfolio Parsippany, NJ 523,074523.1k $8.3m $8.3m 0.53% Added +7.8k +7,795
65 VOYA INVESTMENT MANAGEMENT LLC 0.01% of their portfolio ATLANTA, GA 515,136515.1k $8.2m $8.2m 0.01% Added +86.9k +86,946
66 CM Management, LLC 8.42% of their portfolio GULF BREEZE, FL 500,000500.0k $7.9m $7.9m 8.42% Unchanged
67 Swiss National Bank 0.01% of their portfolio ZURICH, V8 480,800480.8k $7.6m $7.6m 0.01% Added +4.7k +4,700
68 BRIDGER MANAGEMENT, LLC 2.72% of their portfolio NEW YORK, NY 467,220467.2k $7.4m $7.4m 2.72% Unchanged
69 SECTORAL ASSET MANAGEMENT INC 1.43% of their portfolio MONTREAL, A8 464,112464.1k $7.4m $7.4m 1.43% Added +27.7k +27,665
70 Fisher Asset Management, LLC 0.00% of their portfolio PLANO, TX 450,795450.8k $7.2m $7.2m 0.00% Reduced -252.1k -252,122
71 Decheng Capital Management III (Cayman), LLC 2.20% of their portfolio Grand Cayman, E9 415,880415.9k $6.6m $6.6m 2.20% New
72 Schonfeld Strategic Advisors LLC 0.06% of their portfolio NEW YORK, NY 392,500392.5k $6.2m $6.2m 0.06% Added +15.5k +15,531
73 Ikarian Capital, LLC 2.30% of their portfolio DALLAS, TX 390,162390.2k $6.2m $6.2m 2.30% Reduced -57.5k -57,538
74 ArrowMark Colorado Holdings LLC 0.07% of their portfolio Denver, CO 383,780383.8k $6.1m $6.1m 0.07% Added +219.3k +219,288
75 Birchview Capital, LP 2.56% of their portfolio BURLINGTON, VT 380,000380.0k $6.0m $6.0m 2.56% Added +190.0k +190,000
76 Tri Locum Partners LP 1.88% of their portfolio NEW YORK, NY 369,912369.9k $5.9m $5.9m 1.88% Added +72.1k +72,105
77 RHUMBLINE ADVISERS 0.01% of their portfolio BOSTON, MA 364,396364.4k $5.8m $5.8m 0.01% Added +449 +449
78 FRED ALGER MANAGEMENT, LLC 0.03% of their portfolio NEW YORK, NY 354,859354.9k $5.6m $5.6m 0.03% Added +316.2k +316,201
79 BARCLAYS PLC 0.00% of their portfolio LONDON, X0 342,727342.7k $5.4m $5.4m 0.00% Added +76.2k +76,185
80 Squarepoint Ops LLC 0.03% of their portfolio NEW YORK, NY 336,090336.1k $5.3m $5.3m 0.03% Added +260.7k +260,714
81 NEW YORK STATE COMMON RETIREMENT FUND 0.01% of their portfolio ALBANY, NY 324,926324.9k $5.2m $5.2m 0.01% Added +40.5k +40,537
82 UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.00% of their portfolio NEW YORK, NY 306,020306.0k $4.9m $4.9m 0.00% Added +12.2k +12,230
83 ALLIANCEBERNSTEIN L.P. 0.00% of their portfolio NASHVILLE, TN 300,514300.5k $4.8m $4.8m 0.00% Unchanged
84 HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND 0.02% of their portfolio TORONTO, A6 300,000300.0k $4.8m $4.8m 0.02% New
85 CREDIT SUISSE AG/ 0.00% of their portfolio ZURICH, V8 293,041293.0k $4.7m $4.7m 0.00% Reduced -24.7k -24,678
86 Hillsdale Investment Management Inc. 0.42% of their portfolio Toronto, A6 285,890285.9k $4.5m $4.5m 0.42% Reduced -810 -810
87 Moody Aldrich Partners LLC 0.85% of their portfolio MARBLEHEAD, MA 283,950283.9k $4.5m $4.5m 0.85% Added +79.1k +79,094
88 FIRST MANHATTAN CO. LLC. 0.02% of their portfolio NEW YORK, NY 283,400283.4k $4.5m $4.5m 0.02% Reduced -1.4m -1,424,100
89 TD Asset Management Inc 0.01% of their portfolio Toronto, A6 282,400282.4k $4.5m $4.5m 0.01% Added +184.5k +184,500
90 PRIMECAP MANAGEMENT CO/CA/ 0.00% of their portfolio PASADENA, CA 273,100273.1k $4.3m $4.3m 0.00% Unchanged
91 BLAIR WILLIAM & CO/IL 0.02% of their portfolio CHICAGO, IL 254,320254.3k $4.0m $4.0m 0.02% Reduced -1.7k -1,685
92 CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.01% of their portfolio WEST SACRAMENTO, CA 246,379246.4k $3.9m $3.9m 0.01% Reduced -26.8k -26,805
93 CITIGROUP INC 0.01% of their portfolio NEW YORK, NY 245,551245.6k $3.9m $3.9m 0.01% Added +50.9k +50,869
94 WELLS FARGO & COMPANY/MN 0.00% of their portfolio SAN FRANCISCO, CA 242,843242.8k $3.9m $3.9m 0.00% Added +18.8k +18,796
95 SEVEN EIGHT CAPITAL, LP 0.44% of their portfolio New York, NY 238,930238.9k $3.8m $3.8m 0.44% Added +141.9k +141,946
96 GROUP ONE TRADING LLC 0.15% of their portfolio CHICAGO, IL 238,327238.3k $3.8m $3.8m 0.15% Added +142.8k +142,766
97 BNP PARIBAS FINANCIAL MARKETS 0.01% of their portfolio PARIS, I0 236,082236.1k $3.7m $3.7m 0.01% Reduced -142.4k -142,409
98 Sio Capital Management, LLC 1.14% of their portfolio NEW YORK, NY 232,751232.8k $3.7m $3.7m 1.14% Reduced -13.2k -13,170
99 MANUFACTURERS LIFE INSURANCE COMPANY, THE 0.00% of their portfolio Toronto, A6 229,618229.6k $3.6m $3.6m 0.00% Added +67.9k +67,919
100 DEUTSCHE BANK AG\ 0.00% of their portfolio FRANKFURT AM MAIN, 2M 225,066225.1k $3.6m $3.6m 0.00% Reduced -3.1m -3,079,661