13F holdings
FRONTIER CAPITAL MANAGEMENT CO LLC portfolio
Managed by . 291 reported positions worth $9.7B as of 2026-03-31, filed with the SEC on 2026-05-15. Parsed from the filing itself, not a reseller.
$9.7B
Book value
291
Positions
15%
Top 10 weight
+29
New this quarter
-33
Exited
134 days
Age today
How old this actually is
Every position on this page is a snapshot of 2026-03-31. It was already 45 days old on 2026-05-15, the day it first became public. Today it is 134 days old.
That lag is the law, not a service level — Rule 13f-1 gives managers 45 days after quarter end to file, and no product can shorten it. A fund can have sold every share below before you read this sentence. Treat it as a record of what happened, never as a position you can follow.
What changed
Positions opened and closed
Against its 2025-12-31 filing. This is the part worth reading — the holdings table below is mostly years old.
New positions (29)
| Ticker | Issuer | Value | Shares | % of book |
|---|---|---|---|---|
| AR | ANTERO RESOURCES CORP | $57.3M | 1,349,237 | 0.59% |
| GPOR | GULFPORT ENERGY CORP | $47.0M | 221,949 | 0.48% |
| PVLA | PALVELLA THERAPEUTICS INC NE | $46.6M | 374,035 | 0.48% |
| LMND | LEMONADE INC | $42.1M | 672,383 | 0.43% |
| CIFR | CIPHER DIGITAL INC | $39.6M | 3,079,999 | 0.41% |
| SFNC | SIMMONS FIRST NATL CORP | $34.9M | 1,792,102 | 0.36% |
| COR | CENCORA INC | $34.3M | 109,048 | 0.35% |
| AGI | ALAMOS GOLD INC | $32.2M | 724,588 | 0.33% |
| AAOI | APPLIED OPTOELECTRONICS INC | $24.0M | 284,146 | 0.25% |
| CHE | CHEMED CORP NEW | $23.7M | 62,726 | 0.24% |
| MUSA | MURPHY USA INC | $21.0M | 42,455 | 0.22% |
| PRAX | PRAXIS PRECISION MEDICINES I | $17.2M | 53,365 | 0.18% |
| WDAY | WORKDAY INC | $14.9M | 114,315 | 0.15% |
| ACHC | ACADIA HEALTHCARE COMPANY IN | $13.5M | 575,243 | 0.14% |
| RRC | RANGE RES CORP | $13.4M | 297,521 | 0.14% |
| SYNA | SYNAPTICS INC | $13.0M | 184,946 | 0.13% |
| DECK | DECKERS OUTDOOR CORP | $12.9M | 128,616 | 0.13% |
| CVLT | COMMVAULT SYS INC | $12.5M | 161,115 | 0.13% |
| SOLS | SOLSTICE ADVANCED MATLS INC | $12.4M | 162,338 | 0.13% |
| SWKS | SKYWORKS SOLUTIONS INC | $9.7M | 181,435 | 0.10% |
| MSI | MOTOROLA SOLUTIONS INC | $8.5M | 19,524 | 0.09% |
| POOL | POOL CORP | $5.8M | 28,597 | 0.06% |
| GXO | GXO LOGISTICS INCORPORATED | $4.9M | 94,925 | 0.05% |
| VRDN | VIRIDIAN THERAPEUTICS INC | $3.1M | 158,371 | 0.03% |
| AJG | GALLAGHER ARTHUR J & CO | $387,462 | 1,789 | 0.00% |
Closed out (33)
| Ticker | Issuer | Was worth | Shares | % of book |
|---|---|---|---|---|
| WBS | WEBSTER FINL CORP | $50.4M | 800,420 | 0.00% |
| U | UNITY SOFTWARE INC | $46.4M | 1,050,468 | 0.00% |
| BILL | BILL HOLDINGS INC | $35.0M | 641,710 | 0.00% |
| ONON | ON HLDG AG | $17.0M | 365,478 | 0.00% |
| AESI | ATLAS ENERGY SOLUTIONS INC | $15.6M | 1,655,363 | 0.00% |
| FLYW | FLYWIRE CORPORATION | $15.6M | 1,098,194 | 0.00% |
| MGNI | MAGNITE INC | $15.3M | 944,701 | 0.00% |
| MXL | MAXLINEAR INC | $14.3M | 819,504 | 0.00% |
| INSP | INSPIRE MED SYS INC | $13.1M | 142,007 | 0.00% |
| BWXT | BWX TECHNOLOGIES INC | $12.2M | 70,868 | 0.00% |
| PAYC | PAYCOM SOFTWARE INC | $11.0M | 68,904 | 0.00% |
| DVN | DEVON ENERGY CORP NEW | $10.2M | 279,196 | 0.00% |
| GPK | GRAPHIC PACKAGING HLDG CO | $10.1M | 672,224 | 0.00% |
| TYL | TYLER TECHNOLOGIES INC | $9.4M | 20,711 | 0.00% |
| KKR | KKR & CO INC | $8.3M | 65,002 | 0.00% |
| TWLO | TWILIO INC | $8.0M | 56,555 | 0.00% |
| SG | SWEETGREEN INC | $7.1M | 1,051,122 | 0.00% |
| APP | APPLOVIN CORP | $7.1M | 10,496 | 0.00% |
| KTOS | KRATOS DEFENSE & SEC SOLUTIO | $7.0M | 91,909 | 0.00% |
| ROG | ROGERS CORP | $6.6M | 72,167 | 0.00% |
| CDW | CDW CORP | $6.4M | 46,667 | 0.00% |
| ACM | AECOM | $6.3M | 65,698 | 0.00% |
| ZETA | ZETA GLOBAL HOLDINGS CORP | $6.0M | 293,526 | 0.00% |
| ENVX | ENOVIX CORPORATION | $5.9M | 809,513 | 0.00% |
| SLNOEUR | SOLENO THERAPEUTICS INC | $5.5M | 119,695 | 0.00% |
Added to (116)
| Ticker | Issuer | Value | Shares | % of book | Shares Δ |
|---|---|---|---|---|---|
| UTHR | UNITED THERAPEUTICS CORP DEL | $149.8M | 252,702 | 1.54% | +39% |
| CRCL | CIRCLE INTERNET GROUP INC | $147.7M | 1,548,150 | 1.52% | +37% |
| LRN | STRIDE INC | $136.6M | 1,549,291 | 1.40% | +864% |
| ALK | ALASKA AIR GROUP INC | $124.1M | 3,373,587 | 1.28% | +48% |
| KNX | KNIGHT-SWIFT TRANSN HLDGS IN | $120.1M | 2,086,544 | 1.23% | +7% |
| AKAM | AKAMAI TECHNOLOGIES INC | $119.0M | 1,036,569 | 1.22% | +127% |
| EXP | EAGLE MATLS INC | $115.7M | 610,654 | 1.19% | +12% |
| ASH | ASHLAND INC | $106.4M | 1,912,689 | 1.09% | +34% |
| JAZZ | JAZZ PHARMACEUTICALS PLC | $97.8M | 517,284 | 1.01% | +184% |
| TDW | TIDEWATER INC NEW | $89.6M | 1,072,793 | 0.92% | +13% |
| APGE | APOGEE THERAPEUTICS INC | $89.6M | 1,064,483 | 0.92% | +122% |
| KEX | KIRBY CORP | $85.6M | 644,329 | 0.88% | +385% |
| ADC | AGREE RLTY CORP | $83.0M | 1,101,386 | 0.85% | +37% |
| INSM | INSMED INC | $76.8M | 469,561 | 0.79% | +65% |
| LBRT | LIBERTY ENERGY INC | $71.8M | 2,494,222 | 0.74% | +1277% |
Trimmed (136)
| Ticker | Issuer | Value | Shares | % of book | Shares Δ |
|---|---|---|---|---|---|
| IONQ | IONQ INC | $306,463 | 10,630 | 0.00% | -97% |
| PSN | PARSONS CORP DEL | $612,663 | 11,310 | 0.01% | -95% |
| SNCY | SUN CTRY AIRLS HLDGS INC | $9.7M | 584,311 | 0.10% | -82% |
| PGY | PAGAYA TECHNOLOGIES LTD | $2.3M | 196,696 | 0.02% | -81% |
| HXL | HEXCEL CORP NEW | $11.3M | 140,148 | 0.12% | -72% |
| COHR | COHERENT CORP | $26.9M | 112,906 | 0.28% | -71% |
| MKSI | MKS INC. | $37.1M | 161,250 | 0.38% | -71% |
| TER | TERADYNE INC | $54.3M | 183,204 | 0.56% | -68% |
| CRDO | CREDO TECHNOLOGY GROUP HOLDI | $10.5M | 112,235 | 0.11% | -66% |
| VEEV | VEEVA SYS INC | $5.3M | 30,253 | 0.05% | -63% |
| CRL | CHARLES RIV LABS INTL INC | $8.3M | 48,062 | 0.09% | -61% |
| MAT | MATTEL INC | $24.6M | 1,691,423 | 0.25% | -60% |
| LW | LAMB WESTON HLDGS INC | $7.5M | 177,794 | 0.08% | -60% |
| TRU | TRANSUNION | $9.4M | 136,442 | 0.10% | -58% |
| EPAM | EPAM SYS INC | $11.0M | 80,912 | 0.11% | -54% |
The book
Largest 150 of 291 holdings
| Ticker | Issuer | Value | Shares | % of book | Shares Δ |
|---|---|---|---|---|---|
| FTAI | FTAI AVIATION LTD | $260.2M | 1,062,210 | 2.67% | — |
| DAR | DARLING INGREDIENTS INC | $151.9M | 2,455,668 | 1.56% | — |
| UTHR | UNITED THERAPEUTICS CORP DEL | $149.8M | 252,702 | 1.54% | — |
| CRCL | CIRCLE INTERNET GROUP INC | $147.7M | 1,548,150 | 1.52% | — |
| GVA | GRANITE CONSTR INC | $142.4M | 1,187,736 | 1.46% | — |
| LRN | STRIDE INC | $136.6M | 1,549,291 | 1.40% | — |
| AMTM | AMENTUM HOLDINGS INC | $128.6M | 4,930,210 | 1.32% | — |
| XPO | XPO INC | $126.9M | 652,073 | 1.30% | — |
| ALK | ALASKA AIR GROUP INC | $124.1M | 3,373,587 | 1.28% | — |
| KNX | KNIGHT-SWIFT TRANSN HLDGS IN | $120.1M | 2,086,544 | 1.23% | — |
| AKAM | AKAMAI TECHNOLOGIES INC | $119.0M | 1,036,569 | 1.22% | — |
| EXP | EAGLE MATLS INC | $115.7M | 610,654 | 1.19% | — |
| UCTT | ULTRA CLEAN HLDGS INC | $111.1M | 1,787,451 | 1.14% | — |
| BPOP | POPULAR INC | $107.5M | 800,930 | 1.10% | — |
| ASH | ASHLAND INC | $106.4M | 1,912,689 | 1.09% | — |
| ATI | ATI INC | $101.0M | 694,422 | 1.04% | — |
| JAZZ | JAZZ PHARMACEUTICALS PLC | $97.8M | 517,284 | 1.01% | — |
| TDW | TIDEWATER INC NEW | $89.6M | 1,072,793 | 0.92% | — |
| APGE | APOGEE THERAPEUTICS INC | $89.6M | 1,064,483 | 0.92% | — |
| ENTG | ENTEGRIS INC | $88.5M | 754,706 | 0.91% | — |
| MPWR | MONOLITHIC PWR SYS INC | $87.1M | 79,699 | 0.90% | — |
| KEX | KIRBY CORP | $85.6M | 644,329 | 0.88% | — |
| ADC | AGREE RLTY CORP | $83.0M | 1,101,386 | 0.85% | — |
| SANM | SANMINA CORP | $82.6M | 637,388 | 0.85% | — |
| INSM | INSMED INC | $76.8M | 469,561 | 0.79% | — |
| ALAB | ASTERA LABS INC | $75.4M | 688,213 | 0.78% | — |
| LBRT | LIBERTY ENERGY INC | $71.8M | 2,494,222 | 0.74% | — |
| BBIO | BRIDGEBIO PHARMA INC | $71.1M | 957,989 | 0.73% | — |
| BLDR | BUILDERS FIRSTSOURCE INC | $70.8M | 860,494 | 0.73% | — |
| BURL | BURLINGTON STORES INC | $70.5M | 216,537 | 0.72% | — |
| PRDO | PERDOCEO ED CORP | $68.7M | 1,846,986 | 0.71% | — |
| WFRD | WEATHERFORD INTL PLC | $68.6M | 725,497 | 0.71% | — |
| ROYAL CARIBBEAN GROUP | ROYAL CARIBBEAN GROUP | $65.6M | 238,299 | 0.67% | — |
| LUNR | INTUITIVE MACHINES INC | $65.2M | 3,513,799 | 0.67% | — |
| WTFC | WINTRUST FINL CORP | $64.2M | 462,012 | 0.66% | — |
| SAIA | SAIA INC | $64.1M | 182,492 | 0.66% | — |
| SILA REALTY TRUST INC | SILA REALTY TRUST INC | $63.9M | 2,696,692 | 0.66% | — |
| KYMR | KYMERA THERAPEUTICS INC | $63.3M | 759,848 | 0.65% | — |
| FBP | FIRST BANCORP CORPORATION | $62.5M | 2,923,738 | 0.64% | — |
| INDI | INDIE SEMICONDUCTOR INC | $62.0M | 19,246,088 | 0.64% | — |
| RNST | RENASANT CORP | $61.5M | 1,702,713 | 0.63% | — |
| NTRA | NATERA INC | $58.9M | 294,347 | 0.61% | — |
| AR | ANTERO RESOURCES CORP | $57.3M | 1,349,237 | 0.59% | — |
| ELAN | ELANCO ANIMAL HEALTH INC | $56.5M | 2,362,526 | 0.58% | — |
| LSCC | LATTICE SEMICONDUCTOR CORP | $56.1M | 605,318 | 0.58% | — |
| P | EVERPURE INC | $55.8M | 944,522 | 0.57% | — |
| EBC | EASTERN BANKSHARES INC | $55.6M | 2,840,293 | 0.57% | — |
| SIGI | SELECTIVE INS GROUP INC | $55.0M | 729,748 | 0.57% | — |
| FR | FIRST INDL RLTY TR INC | $54.7M | 946,365 | 0.56% | — |
| TER | TERADYNE INC | $54.3M | 183,204 | 0.56% | — |
| STAG | STAG INDUSTRIAL INC | $54.1M | 1,501,567 | 0.56% | — |
| MRVL | MARVELL TECHNOLOGY INC | $53.6M | 540,979 | 0.55% | — |
| FAF | FIRST AMERN FINL CORP | $53.1M | 880,804 | 0.55% | — |
| KBR | KBR INC | $52.9M | 1,434,095 | 0.54% | — |
| LCII | LCI INDS | $52.8M | 429,091 | 0.54% | — |
| MDB | MONGODB INC | $52.5M | 214,316 | 0.54% | — |
| BDC | BELDEN INC | $52.3M | 455,338 | 0.54% | — |
| MTDR | MATADOR RES CO | $52.0M | 823,306 | 0.53% | — |
| MDU | MDU RES GROUP INC | $51.9M | 2,506,549 | 0.53% | — |
| SNX | TD SYNNEX CORPORATION | $49.5M | 293,282 | 0.51% | — |
| ALGT | ALLEGIANT TRAVEL CO | $48.7M | 601,215 | 0.50% | — |
| GTX | GARRETT MOTION INC | $48.6M | 2,675,133 | 0.50% | — |
| GPOR | GULFPORT ENERGY CORP | $47.0M | 221,949 | 0.48% | — |
| AIR | AAR CORP | $46.8M | 427,187 | 0.48% | — |
| PVLA | PALVELLA THERAPEUTICS INC NE | $46.6M | 374,035 | 0.48% | — |
| RARE | ULTRAGENYX PHARMACEUTICAL IN | $45.9M | 2,191,182 | 0.47% | — |
| WSFS | WSFS FINL CORP | $44.2M | 675,496 | 0.45% | — |
| MOD | MODINE MFG CO | $44.2M | 204,039 | 0.45% | — |
| PR | PERMIAN RESOURCES CORP | $44.2M | 2,071,205 | 0.45% | — |
| CVSA | COVISTA INC | $43.9M | 381,161 | 0.45% | — |
| JBL | JABIL INC | $43.8M | 164,827 | 0.45% | — |
| IRT | INDEPENDENCE RLTY TR INC | $42.7M | 2,869,720 | 0.44% | — |
| LMND | LEMONADE INC | $42.1M | 672,383 | 0.43% | — |
| ATMU | ATMUS FILTRATION TECHNOLOGIE | $42.1M | 742,221 | 0.43% | — |
| RRX | REGAL REXNORD CORPORATION | $40.8M | 217,910 | 0.42% | — |
| NUVALENT INC | NUVALENT INC | $40.5M | 395,546 | 0.42% | — |
| DIOD | DIODES INC | $40.4M | 592,499 | 0.42% | — |
| ARW | ARROW ELECTRS INC | $40.3M | 280,747 | 0.41% | — |
| COHU | COHU INC | $39.6M | 1,294,616 | 0.41% | — |
| CIFR | CIPHER DIGITAL INC | $39.6M | 3,079,999 | 0.41% | — |
| DOCN | DIGITALOCEAN HLDGS INC | $39.2M | 457,157 | 0.40% | — |
| CRS | CARPENTER TECHNOLOGY CORP | $39.1M | 99,134 | 0.40% | — |
| GWRE | GUIDEWIRE SOFTWARE INC | $38.8M | 259,527 | 0.40% | — |
| RXO | RXO INC | $38.8M | 2,651,537 | 0.40% | — |
| TFIN | TRIUMPH FINANCIAL INC | $38.5M | 644,777 | 0.40% | — |
| EPRT | ESSENTIAL PPTYS RLTY TR INC | $38.5M | 1,266,487 | 0.40% | — |
| NMIH | NMI HLDGS INC | $38.1M | 1,016,226 | 0.39% | — |
| TKR | TIMKEN CO | $38.0M | 378,192 | 0.39% | — |
| LXP | LXP INDUSTRIAL TRUST | $37.8M | 817,235 | 0.39% | — |
| PLNT | PLANET FITNESS MASTER ISSUER | $37.7M | 506,609 | 0.39% | — |
| FIP | FTAI INFRASTRUCTURE INC | $37.3M | 7,555,692 | 0.38% | — |
| MKSI | MKS INC. | $37.1M | 161,250 | 0.38% | — |
| NVST | ENVISTA HOLDINGS CORPORATION | $36.4M | 1,435,870 | 0.37% | — |
| SON | SONOCO PRODS CO | $36.3M | 671,598 | 0.37% | — |
| PODD | INSULET CORP | $36.2M | 172,513 | 0.37% | — |
| SFNC | SIMMONS FIRST NATL CORP | $34.9M | 1,792,102 | 0.36% | — |
| KTB | KONTOOR BRANDS INC | $34.6M | 492,525 | 0.36% | — |
| CWK | CUSHMAN AND WAKEFIELD LTD | $34.5M | 2,810,943 | 0.35% | — |
| AXSM | AXSOME THERAPEUTICS INC. | $34.3M | 203,066 | 0.35% | — |
| COR | CENCORA INC | $34.3M | 109,048 | 0.35% | — |
| ABG | ASBURY AUTOMOTIVE GROUP INC | $34.1M | 174,687 | 0.35% | — |
| RYZ | RYERSON HLDG CORP | $34.1M | 1,517,062 | 0.35% | — |
| FBK | FB FINL CORP | $34.0M | 655,169 | 0.35% | — |
| FLS | FLOWSERVE CORP | $34.0M | 462,448 | 0.35% | — |
| CGNX | COGNEX CORP | $34.0M | 693,899 | 0.35% | — |
| PWP | PERELLA WEINBERG PARTNERS | $33.9M | 1,867,595 | 0.35% | — |
| NSIT | INSIGHT ENTERPRISES INC | $33.9M | 505,311 | 0.35% | — |
| WAFD | WAFD INC | $33.7M | 1,074,552 | 0.35% | — |
| HOPE | HOPE BANCORP INC | $33.7M | 3,019,097 | 0.35% | — |
| ALGN | ALIGN TECHNOLOGY INC | $33.7M | 196,512 | 0.35% | — |
| FICO | FAIR ISAAC CORP | $33.6M | 31,471 | 0.35% | — |
| LNG | CHENIERE ENERGY INC | $33.5M | 117,989 | 0.34% | — |
| KNF | KNIFE RIVER CORP | $33.4M | 409,487 | 0.34% | — |
| ERO | ERO COPPER CORP | $33.4M | 1,250,947 | 0.34% | — |
| SLGN | SILGAN HLDGS INC | $33.3M | 858,497 | 0.34% | — |
| CELH | CELSIUS HLDGS INC | $33.2M | 936,062 | 0.34% | — |
| NET | CLOUDFLARE INC | $32.5M | 157,299 | 0.33% | — |
| AGI | ALAMOS GOLD INC | $32.2M | 724,588 | 0.33% | — |
| TMDX | TRANSMEDICS GROUP INC | $31.9M | 320,471 | 0.33% | — |
| DXCM | DEXCOM INC | $31.8M | 505,628 | 0.33% | — |
| BJ | BJS WHSL CLUB HLDGS INC | $31.4M | 319,220 | 0.32% | — |
| FLR | FLUOR CORP | $31.3M | 671,777 | 0.32% | — |
| MLI | MUELLER INDS INC | $31.3M | 282,443 | 0.32% | — |
| PWR | QUANTA SVCS INC | $31.2M | 56,897 | 0.32% | — |
| DFIN | DONNELLEY FINL SOLUTIONS INC | $30.8M | 653,818 | 0.32% | — |
| SIMO | SILICON MOTION TECHNOLOGY CO | $30.6M | 272,356 | 0.31% | — |
| SBCF | SEACOAST BKG CORP FLA | $30.3M | 999,246 | 0.31% | — |
| MMSI | MERIT MED SYS INC | $29.7M | 430,618 | 0.31% | — |
| RBC | RBC BEARINGS INC | $28.9M | 53,193 | 0.30% | — |
| QDEL | QUIDELORTHO CORP | $28.8M | 1,752,613 | 0.30% | — |
| VST | VISTRA CORP | $28.7M | 191,007 | 0.30% | — |
| VOYG | VOYAGER TECHNOLOGIES INC | $28.7M | 1,227,187 | 0.30% | — |
| UTL | UNITIL CORP | $28.7M | 548,780 | 0.29% | — |
| BETR | BETTER HOME & FINANCE HOLDIN | $28.3M | 793,934 | 0.29% | — |
| CDP | COPT DEFENSE PROPERTIES | $27.7M | 903,876 | 0.28% | — |
| ROCK | GIBRALTAR INDS INC | $27.4M | 688,272 | 0.28% | — |
| COHR | COHERENT CORP | $26.9M | 112,906 | 0.28% | — |
| TILE | INTERFACE INC | $26.5M | 1,062,108 | 0.27% | — |
| RKLB | ROCKET LAB CORP | $25.9M | 403,740 | 0.27% | — |
| LTH | LIFE TIME GROUP HOLDINGS INC | $25.2M | 936,597 | 0.26% | — |
| COO | COOPER COS INC | $25.2M | 352,335 | 0.26% | — |
| INTERNATIONAL SEAWAYS IN | INTERNATIONAL SEAWAYS INC | $25.1M | 344,697 | 0.26% | — |
| LHX | L3HARRIS TECHNOLOGIES INC | $24.9M | 72,032 | 0.26% | — |
| LGIH | LGI HOMES INC | $24.9M | 628,929 | 0.26% | — |
| CACI | CACI INTL INC | $24.8M | 45,564 | 0.25% | — |
| MAT | MATTEL INC | $24.6M | 1,691,423 | 0.25% | — |
| BWIN | THE BALDWIN INSURANCE GRP IN | $24.2M | 1,102,452 | 0.25% | — |
| AAOI | APPLIED OPTOELECTRONICS INC | $24.0M | 284,146 | 0.25% | — |
| NP | NEPTUNE INS HLDGS INC | $23.9M | 986,848 | 0.25% | — |
| TRVI | TREVI THERAPEUTICS INC | $23.8M | 1,994,292 | 0.24% | — |
This table is the 150 largest positions by value, out of 291 reported. The search box only searches what is on this page — a name absent from it may still be in the filing further down the book. The full info table is here.
Rows are aggregated by CUSIP — a manager files the same security multiple times when different internal desks hold it. Tickers link to our own backtest of that asset where we cover it.
Read the original
This page was built from one document: the 2026-03-31 Form 13F info table filed by FRONTIER CAPITAL MANAGEMENT CO LLC (CIK 351173, accession 0001172661-26-002082). Every other 13F site is reading the same file.
If anything here disagrees with it, the filing wins — and we would want to know. All 13F filings by this manager
What a 13F cannot show you
A 13F is a long-only equity snapshot, and the holes in it are structural. Anyone selling you this data as "what the smart money is doing" is selling you one leg of a position:
- No short positions. None, ever. A fund shown here as bullish may be net short the same name through a book you cannot see.
- No cash, bonds, FX, commodities or non-US listings. A macro fund's entire thesis can be invisible.
- No intra-quarter round trips. Bought and sold inside the same quarter means it never appears at all.
- Options are notional, not ownership. We keep puts and calls in a separate bucket rather than adding their notional into a fund's book size, which is how a $2B fund gets reported as a $20B one.
- Confidential treatment. Managers can ask the SEC to withhold a position while they build it. Those holdings are legally absent from the filing, so a "new" position may be months old.
Tested and published by IndicatorEdge · backtest grid generated 2026-06-25 · base rates recomputed 2026-07-31 · how we test
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