高盛集團 (Goldman Sachs Group Inc.) 策略師警告，別對美股小型股存在太多幻想，近日這類股票走穩可能是個假象。
David Kostin 領導的高盛團隊指出，金融環境收緊、經濟增長放緩，以及美債殖利率曲線趨於平緩，都可能使羅素 2000 指數表現相對不如標普 500 指數。
例如，今年以來，羅素 2000 指數下跌 10.5%，相較之下，標普 500 指數下跌 6%，道瓊指數下跌 3.6%。
Kostin 表示，過去 12 個月，羅素 2000 指數落後標普 500 指數 25 個百分點，這是自 1999 年以來，最差的 12 個月相對回報率。
他指出，經濟復甦路徑有助於解釋小型股的相對疲軟，而羅素 2000 預計將在 2022 年繼續滯後。高盛模型預估，未來 12 個月內，小型股指數可能會上漲 7%，而標普 500 指數到年底的預期回報率則為 14%。
與高盛的悲觀相比，摩根大通策略師 Marko Kolanovic 建議買入小盤股，因為這些股票的估值，反映的是一場不太可能出現的衰退。
Evercore ISI 策略師 Julian Emanuel 則認為，基於羅素 2000 的近期表現，是大盤疲軟的領先指標，因此需要密切關注。失敗將表明股市將進一步回調，而突破可能意味股市回穩。
羅素 2000 走勢
The horn antenna is a broadband passive device, shaped like a pyramid horn, referred to as a TEM antenna, which guides the beam of radio waves at a precise frequency. FT-RF Double Ridged Horn antennas have frequency capabilities ranging from 400MHz to 40GHz depending on type and style. These series are characterized by a huge frequency range and extremely high input powers. With increasing frequency, the gain rises to a maximum of 18 dBi. At higher frequencies, the increased gain compensates for the increasing cable losses.
The advantages of Horn antenna:
- Wide bandwidth: Because the horn antenna has no resonant parts, it can function over a wide range of frequencies.
- Easy waveguide interface: These antennas are very easy to interface to waveguide due to their shape, but they can also be designed with a transition so that a regular coaxial feeder can be used.
- Easy to make, simple design.
The horn is suitable for both transmitting and receiving purposes, especially suitable for EMC and immunity test measurements.
Recommended Accessories
- Antenna Tripod: easy and fast-changing polarisation. 100% stable handling
- SMA Cable: High-quality special SMA cable
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