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DRAM vs IBB: which is really different?

DRAM and IBB hold 0% of their weight in the same names. Roundhill Memory ETF and iShares Biotechnology ETF.

IBB costs 0.21 points a year less; DRAM is 2.4 times larger.

DRAMIBB
Expense ratio0.65%0.44%
Net assets, as of Oct 8, 2026$24.2bn$10.3bn
Total return, 1 yearnot published+36.1%
What it tracksMemory and storageBiotech
Holdings in common0%
S&P 500, total return, since Apr 2, 2026+19.3%
S&P 500, total return, 1 year+17.3%
Against the S&P 500, since Apr 2, 2026ahead by 86.7 pts
Against the S&P 500, 1 yearahead by 18.8 pts
Below its all-time high29.1%, high on Jun 22, 2026

Holdings in common uses holdings dated Jun 30, 2026 and Oct 8, 2026.

15.7%
DRAM in the S&P 500
39.5%
IBB in the S&P 500
+106.0%
DRAM total return, since launch
+36.1%
IBB total return, 1 year
DRAM · 6 months to Oct 9, 202684% of its weight is outside the S&P 500
84% of its weight is outside the S&P 50016% of DRAM's weight is in S&P 500 companies and 84% is outside the index. Holdings as of Jun 30, 2026.16%84%in the S&P 500of its weight outside the S&P 500active share 97% · top ten 56% of the fund · 12 holdings as filed for Jun 30, 2026 · Nasdaq-100: 16% in84% of its weight is outside the S&P 50016% of DRAM's weight is in S&P 500 companies and 84% is outside the index. Holdings as of Jun 30, 2026.16%84%inof its weight outside the S&P 500active share 97% · Nasdaq-100: 16% in

16% of DRAM's weight is in S&P 500 companies and 84% is outside the index. Holdings as of Jun 30, 2026.

IBB · 1 year to Oct 9, 202661% of its weight is outside the S&P 500
61% of its weight is outside the S&P 50040% of IBB's weight is in S&P 500 companies and 61% is outside the index. Holdings as of Oct 8, 2026.40%61%of its weight in S&P 500 companiesof its weight outside the S&P 500active share 99% · top ten 50% of the fund · 245 holdings as published by its issuer for Oct 8, 2026 · Nasdaq-100: 33% in61% of its weight is outside the S&P 50040% of IBB's weight is in S&P 500 companies and 61% is outside the index. Holdings as of Oct 8, 2026.40%61%in the S&P 500outside the S&P 500active share 99% · Nasdaq-100: 33% in

40% of IBB's weight is in S&P 500 companies and 61% is outside the index. Holdings as of Oct 8, 2026.

ETFIQ Off-Index Score · IBB scores higherHow much of it is not the index it is sold as an alternative to?
0.1, the lowest in this set92.3, the highest

A percentile among the 391 thematic ETFs with a holdings filing. All thematic ETFs ranked by it → How it is computed →

What they hold in common

By the books each fund has filed, DRAM and IBB hold 0% of their money in the same securities at the same weight. Above 50%, holding both is close to holding one of them twice. Holdings dated Jun 30, 2026 and Oct 8, 2026.

half

0% in common

Positions both hold, largest shared weight first
Holding DRAM IBB
Only in DRAM
SK hynix Inc 15.89%
Samsung Electronics Co Ltd 14.37%
Sandisk Corp 5.21%
Kioxia Holdings Corp 4.36%
Western Digital Corp 4.30%
Seagate Technology Holdings PL 4.19%
GigaDevice Semiconductor Inc 3.07%
Micron Technology Inc 2.03%
Only in IBB
GILEAD SCIENCES 8.37%
AMGEN INC 7.89%
VERTEX PHARMACEUTICALS 7.69%
REGENERON PHARMACEUTICALS 5.40%
MODERNA 5.30%
NATERA 3.88%
ARGENX SE ADR 3.35%
ILLUMINA INC 2.94%

0% of the two portfolios are the same securities at the same weight.

Performance, window by window

Total returnvs the S&P 500vs the Nasdaq-100
WindowDRAMIBBDRAMIBBDRAMIBB
3 months−9.3%+7.5%−12.7 pts+4.1 pts−12.9 pts+3.9 pts
6 months+76.3%+21.9%+61.2 pts+6.8 pts+53.1 pts−1.3 pts
1 yearnot published+36.1%not published+18.8 ptsnot published+12.5 pts
3 yearsnot published+69.1%not published−16.7 ptsnot published−38.2 pts
Since launch
DRAM Apr 2026 · IBB Feb 2001
+106.0%+525.3%+86.7 pts−299.7 pts+77.3 pts−936.3 pts

Source: ETFIQ. Open the live comparison on ETFIQ →

On the same fields

DRAM
Roundhill Memory ETF · Holds 12 stocks in memory and storage, 16% of its weight in S&P 500 companies
IBB
iShares Biotechnology ETF · Holds 245 stocks in biotech, 40% of its weight in S&P 500 companies
Issuer Roundhill iShares
Theme Memory and storage Biotech
In the S&P 500 15.7% 39.5%
Active share vs the S&P 500 96.8% 99.0%
In the Nasdaq-100 15.7% 33.1%
Holdings 12 245
Top ten, share of the fund 56.4% 49.9%
Expense ratio 0.65% 0.44%
Fee for the differing part 0.67% 0.44%
Total return, 1 year +106.0% (since it first traded on Apr 2, 2026) +36.1%
vs the S&P 500 +86.7 pts +18.8 pts
vs the Nasdaq-100 +77.3 pts +12.5 pts
Below its high −29.1% −4.8%
Net assets, as of Oct 8, 2026 $24.2bn $10.3bn

As of Oct 9, 2026. Source: ETFIQ.

DRAM in plain words

By weight, 16% of DRAM's portfolio is stocks that are also in the S&P 500; its active share against the S&P 500 is 97%. The top ten holdings are 56% of the fund across 12 positions, as filed for Jun 30, 2026. Since it first traded on Apr 2, 2026 the fund returned +106.0% with distributions reinvested against +19.3% for the S&P 500, so a holder was ahead by 86.7 pts. It sits 29.1% below its all-time high of Jun 22, 2026.

IBB in plain words

By weight, 40% of IBB's portfolio is stocks that are also in the S&P 500; its active share against the S&P 500 is 99%. The top ten holdings are 50% of the fund across 245 positions, as published by its issuer for Oct 8, 2026. Over the year to Oct 9, 2026 the fund returned +36.1% with distributions reinvested against +17.3% for the S&P 500, so a holder was ahead by 18.8 pts.

Questions people ask

Do DRAM and IBB hold the same stocks?
By their latest filings, 0% of their books are the same securities at the same weight, which is mostly different names. Overlap is the sum of the smaller weight of every security they share.
Which is more different from the S&P 500, DRAM or IBB?
DRAM has 16% of its weight in S&P 500 names and IBB has 40%, so IBB differs more from the index.
Which is cheaper, DRAM or IBB?
DRAM charges 0.65% a year and IBB charges 0.44%, so IBB is cheaper. Fees come from each fund's prospectus.
Other comparisons
DRAM vs XBIDRAM vs IGFDRAM vs GRIDDRAM vs PPAIBB vs GDXIBB vs SOXXIBB vs GRIDIBB vs SMH
DRAM on its own →IBB on its own →How every figure is computed →Standards and sources →
Where these figures came from
DRAM filings on SEC EDGAR ↗DRAM prospectus with the expense ratio (SEC) ↗Roundhill page for DRAM ↗IBB filings on SEC EDGAR ↗IBB prospectus with the expense ratio (SEC) ↗iShares page for IBB ↗

ETFIQ links to the documents behind every figure; a link is not an endorsement. A comparison is not a recommendation.

How this is computed

It is a position in a set, not a rating, and neither end of it is a recommendation.

Weight overlap is an ETFIQ calculation: for every security both funds hold, the smaller of the two weights, summed.

Every figure is an ETFIQ calculation with distributions reinvested.

Cite this page

ETFIQ, DRAM against IBB, data as of Oct 9, 2026. https://etfiq.com/compare/themes/dram-vs-ibb

Open data

Free to use with attribution for figures ETFIQ computes; issuer data stays under its owner's terms.