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 |
Broadcom
AVGO
|
+$38.5M |
| 2 |
SPDR Gold Trust
GLD
|
+$18.5M |
| 3 |
iShares MSCI Emerging Markets ETF
EEM
|
+$15.8M |
| 4 |
SPDR S&P MidCap 400 ETF Trust
MDY
|
+$12.9M |
| 5 |
QIHU
QIHOO 360 TECHNOLOGY CO LTD ADS RPSTG 3 CL A SHS
QIHU
|
+$8.72M |
Top Sells
| 1 |
Apple
AAPL
|
+$36.1M |
| 2 |
GMCR
KEURIG GREEN MTN INC
GMCR
|
+$17.9M |
| 3 |
Chipotle Mexican Grill
CMG
|
+$14.9M |
| 4 |
Walt Disney
DIS
|
+$14.5M |
| 5 |
Alibaba
BABA
|
+$13.3M |
Sector Composition
| 1 | Technology | 15.08% |
| 2 | Communication Services | 13.51% |
| 3 | Consumer Discretionary | 9.68% |
| 4 | Healthcare | 8.98% |
| 5 | Financials | 8.3% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
551
Boston Scientific
BSX
$156B
| $135K | 0.01% |
7,192
+2,646
| +58% | +$49.7K |
|
552
Keurig Dr Pepper
KDP
$37.3B
| $135K | 0.01% |
1,511
+212
| +16% | +$18.9K |
|
|
SAVE
553
DELISTED
Spirit Airlines, Inc.
SAVE
| $135K | 0.01% |
2,816
+229
| +9% | +$11K |
|
|
PACW
554
DELISTED
PacWest Bancorp
PACW
| $135K | 0.01% |
3,652
+3,061
| +518% | +$113K |
|
|
CVRR
555
DELISTED
CVR Refining, LP
CVRR
| $135K | 0.01% |
11,258
+2,043
| +22% | +$24.5K |
|
556
Vicor
VICR
$2.25B
| $134K | 0.01% |
12,859
-6,755
| -34% | -$70.4K |
|
557
Weibo
WB
$2.98B
| $134K | 0.01% |
+7,468
| New | +$134K |
|
|
ARRS
558
DELISTED
ARRIS International plc Ordinary Shares
ARRS
| $134K | 0.01% |
5,852
+3,715
| +174% | +$85.1K |
|
|
JST
559
DELISTED
JINPAN INT'L LTD(COMMON)
JST
| $134K | 0.01% |
+22,877
| New | +$134K |
|
|
FINL
560
DELISTED
Finish Line
FINL
| $133K | 0.01% |
6,342
+1,276
| +25% | +$26.8K |
|
561
Cheesecake Factory
CAKE
$2.92B
| $132K | 0.01% |
2,497
+2,074
| +490% | +$110K |
|
562
Sensata Technologies
ST
$4.59B
| $132K | 0.01% |
+3,407
| New | +$132K |
|
|
VIIX
563
DELISTED
VelocityShares VIX Short Term ETN
VIIX
| $131K | 0.01% |
+220
| New | +$131K |
|
|
DNO
564
DELISTED
United States Short Oil Fund
DNO
| $130K | 0.01% |
+1,522
| New | +$130K |
|
565
Urban Outfitters
URBN
$6.33B
| $128K | 0.01% |
3,873
-1,617
| -29% | -$53.4K |
|
|
ATHN
566
DELISTED
Athenahealth, Inc.
ATHN
| $128K | 0.01% |
923
-5,577
| -86% | -$773K |
|
|
RICE
567
DELISTED
Rice Energy Inc.
RICE
| $128K | 0.01% |
9,226
+8,225
| +822% | +$114K |
|
568
Belden
BDC
$5.15B
| $127K | 0.01% |
2,085
+1,646
| +375% | +$100K |
|
|
ACOR
569
DELISTED
Acorda Therapeutics, Inc.
ACOR
| $127K | 0.01% |
40
+38
| +1,900% | +$121K |
|
|
SHLX
570
DELISTED
Shell Midstream Partners, L.P.
SHLX
| $127K | 0.01% |
3,496
+1,702
| +95% | +$61.8K |
|
|
TGP
571
DELISTED
Teekay LNG Partners L.P.
TGP
| $127K | 0.01% |
10,019
+5,827
| +139% | +$73.9K |
|
572
ProShares UltraShort Dow 30
DXD
$53.1M
| $126K | 0.01% |
+334
| New | +$126K |
|
573
Fair Isaac
FICO
$36.7B
| $126K | 0.01% |
+1,189
| New | +$126K |
|
|
SIX
574
DELISTED
Six Flags Entertainment Corp.
SIX
| $126K | 0.01% |
+2,285
| New | +$126K |
|
|
SPNC
575
DELISTED
Spectranetics Corp
SPNC
| $125K | 0.01% |
8,633
-9,904
| -53% | -$143K |
|