Simplex Trading Portfolio holdings
Simplex Trading, founded in 2004 and headquartered in Chicago, Illinois, is a technology-driven proprietary trading firm specializing in market-making and liquidity provision, primarily in U.S. equity options and futures options. Leveraging advanced proprietary software and data-driven analysis, the firm optimizes trading strategies and develops innovative solutions to capitalize on financial market opportunities, maintaining a competitive edge through automation and a collaborative team of technologists and traders. With a workforce exceeding 300 and led by CEO Erik Swanson since 2014, Simplex operates with a low-ego, high-intelligence culture, focusing on minimal bureaucracy and rapid execution, while also making strategic venture capital investments in fintech startups. Recognized as a top workplace in Chicago by Built In’s 2025 awards, Simplex continues to evolve, blending cutting-edge technology with a commitment to market efficiency and growth.
Top Buys
| 1 |
Amazon
AMZN
|
+$44.9M |
| 2 |
iShares Russell 2000 ETF
IWM
|
+$31.7M |
| 3 |
TWX
Time Warner Inc
TWX
|
+$26.1M |
| 4 |
Booking.com
BKNG
|
+$21.7M |
| 5 |
Alphabet (Google) Class C
GOOG
|
+$18.2M |
Top Sells
| 1 |
SPDR S&P 500 ETF Trust
SPY
|
+$42.8M |
| 2 |
Amgen
AMGN
|
+$32.3M |
| 3 |
Baidu
BIDU
|
+$21.9M |
| 4 |
Micron Technology
MU
|
+$21.2M |
| 5 |
Alphabet (Google) Class A
GOOGL
|
+$17.7M |
Sector Composition
| 1 | Consumer Discretionary | 21.41% |
| 2 | Technology | 19.71% |
| 3 | Communication Services | 17.68% |
| 4 | Healthcare | 6.08% |
| 5 | Financials | 5.75% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
ENLK
801
DELISTED
EnLink Midstream Partners, LP
ENLK
| $118K | ﹤0.01% |
7,064
+2,446
| +53% | +$40.9K |
|
802
Leggett & Platt
LEG
$1.35B
| $117K | ﹤0.01% |
+2,460
| New | +$117K |
|
|
SA
803
Seabridge Gold
SA
$1.8B
| $116K | ﹤0.01% |
+9,533
| New | +$116K |
|
|
SC
804
DELISTED
SANTANDER CONSUMER USA HOLDINGS INC
SC
| $116K | ﹤0.01% |
+7,566
| New | +$116K |
|
|
ALSK
805
DELISTED
Alaska Communications Systems
ALSK
| $116K | ﹤0.01% |
51,396
+22,362
| +77% | +$50.5K |
|
|
VSTO
806
DELISTED
Vista Outdoor Inc.
VSTO
| $116K | ﹤0.01% |
+5,068
| New | +$116K |
|
|
CAF
807
Morgan Stanley China A Share Fund
CAF
$262M
| $115K | ﹤0.01% |
4,824
-9,329
| -66% | -$222K |
|
808
Anywhere Real Estate
HOUS
$699M
| $115K | ﹤0.01% |
3,493
-28,319
| -89% | -$932K |
|
809
Norwegian Cruise Line
NCLH
$11.5B
| $115K | ﹤0.01% |
2,137
-357
| -14% | -$19.2K |
|
|
VRN
810
DELISTED
Veren
VRN
| $115K | ﹤0.01% |
14,401
+7,383
| +105% | +$59K |
|
|
TESO
811
DELISTED
Tesco Corp
TESO
| $115K | ﹤0.01% |
21,227
+7,809
| +58% | +$42.3K |
|
|
TBI
812
Trueblue
TBI
$171M
| $113K | ﹤0.01% |
5,074
+4,811
| +1,829% | +$107K |
|
813
Jacobs Solutions
J
$17.3B
| $112K | ﹤0.01% |
2,344
-4,662
| -67% | -$223K |
|
814
Magnachip Semiconductor
MX
$110M
| $111K | ﹤0.01% |
9,791
-14,878
| -60% | -$169K |
|
|
HRC
815
DELISTED
HILL-ROM HOLDINGS, INC.
HRC
| $111K | ﹤0.01% |
1,505
+1,076
| +251% | +$79.4K |
|
816
Cross Country Healthcare
CCRN
$455M
| $110K | ﹤0.01% |
7,757
-5,275
| -40% | -$74.8K |
|
817
Invesco Dorsey Wright Momentum ETF
PDP
$1.32B
| $110K | ﹤0.01% |
2,276
+1,487
| +188% | +$71.9K |
|
818
PROS Holdings
PRO
$727M
| $110K | ﹤0.01% |
+4,561
| New | +$110K |
|
819
Global X Uranium ETF
URA
$4.31B
| $110K | ﹤0.01% |
8,287
-3,361
| -29% | -$44.6K |
|
|
TBNK
820
DELISTED
Territorial Bancorp Inc.
TBNK
| $110K | ﹤0.01% |
+3,495
| New | +$110K |
|
|
SXCP
821
DELISTED
SunCoke Energy Partners, L.P.
SXCP
| $110K | ﹤0.01% |
6,404
-13,308
| -68% | -$229K |
|
822
iShares US Medical Devices ETF
IHI
$4.24B
| $109K | ﹤0.01% |
3,924
-30,840
| -89% | -$857K |
|
823
Barclays
BCS
$71.8B
| $108K | ﹤0.01% |
11,002
+2,335
| +27% | +$22.9K |
|
|
FENG
824
Phoenix New Media
FENG
$28.2M
| $108K | ﹤0.01% |
3,063
+2,982
| +3,681% | +$105K |
|
825
MarineMax
HZO
$545M
| $108K | ﹤0.01% |
6,567
+2,951
| +82% | +$48.5K |
|