13F
中
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RWWM, Inc.

13F equity value
$1.4B
Positions
34
Top 10 concentration
87.9%
Quarters / total new picks
19 / 34
13F equity value over time
$0M$728M$1B2017201820192020202120222023202420252026

"13F equity value" = market value of this filer's US-listed long equity positions only. It excludes cash, bonds, non-US and short positions, so it understates a fund's true assets under management — often by a lot.

Not significant Verdict

13F holdings are disclosed ~45 days after quarter-end, and they never reveal when within the quarter a fund actually bought. So any 13F-based summary is structurally late and blurred — this applies to every fund, including this one.

We backtested copying it anyway. Buying this fund's new positions the day each filing went public, over 19 quarters, returned +2.5% per quarter — versus +5.5% per quarter from simply owning every 13F stock. It beat that baseline in only 42.1% of quarters (excess t = -1.10, not statistically significant). Its filings tell you what it bought — not what you should buy.

Avg 2Q excess
-4.7%
t-stat
-1.10
Quarterly win rate
42%
Annualized excess
-17.5%
$1 → follow vs universe
$1.27 vs $2.64
Cumulative return: $1 invested in new picks vs universe
1.00 20180331: universe 1.04120180630: universe 0.95920180930: universe 1.00320190331: universe 0.98520190930: universe 1.06020200630: universe 1.17020200930: universe 1.43620201231: universe 1.50120210630: universe 1.62120220331: universe 1.74120230630: universe 1.67820230930: universe 1.90520231231: universe 1.99020240331: universe 2.03520240630: universe 2.22020240930: universe 2.20120250630: universe 2.27020250930: universe 2.55220251231: universe 2.640 20180331: follow 1.14220180630: follow 1.30620180930: follow 1.15920190331: follow 0.91820190930: follow 1.02320200630: follow 1.18220200930: follow 1.18220201231: follow 1.28020210630: follow 1.16920220331: follow 1.00820230630: follow 0.97520230930: follow 0.90320231231: follow 0.73320240331: follow 1.03020240630: follow 1.05320240930: follow 0.95420250630: follow 0.89020250930: follow 0.96520251231: follow 1.270 0.67 1.76 2.85 20182019202020212022202320242025 Follow Universe

Quarterly compounding, invested quarters only · entry 47 days after quarter-end (when 13F data becomes public)

Listed as facts. See the verdict above before treating this as signal.

Top 20 holdings of 34 · 2026 Q1

Ticker Value Weight QoQ
BABA $271M
19.8%
TRIM
DJCO $174M
12.7%
HOLD
WFC $137M
10.0%
TRIM
WHR $131M
9.5%
ADD
BRK/B $117M
8.5%
HOLD
FOXF $91M
6.7%
ADD
CRI $84M
6.1%
TRIM
SGOV $73M
5.3%
TRIM
KHC $72M
5.3%
ADD
XOM $55M
4.0%
TRIM
PII $48M
3.5%
TRIM
MSFT $34M
2.5%
HOLD
HELE $17M
1.2%
ADD
ADBE $12M
0.9%
NEW
HRB $11M
0.8%
NEW
LULU $11M
0.8%
NEW
AMCX $10M
0.8%
HOLD
WGO $5M
0.4%
TRIM
COST $4M
0.3%
HOLD
AAPL $2M
0.1%
TRIM

QoQ vs previous quarter's share count · NEW = new position · ADD/TRIM = ±2% shares · HOLD = unchanged.

Listed as facts. See the verdict above before treating this as signal.

New positions in 2026 Q1

ADBEHRBLULU

Method & Limitations

Method: a "new position" = held this quarter, absent last quarter (options excluded; stocks with <50 prior holders excluded to filter spin-off artifacts). Entry 47 days after quarter-end — the first day the public could act on the filing. Benchmark = equal-weighted universe of all 13F-held stocks. Limitations: quarterly snapshots can't see intra-quarter trades; survivorship bias — funds that shut down are absent, which flatters the sample. Statistics, not advice.