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 | |
|---|---|---|---|---|---|---|
526
Abercrombie & Fitch
ANF
$4.54B
| $147K | 0.01% |
4,686
-12,231
| -72% | -$384K |
|
|
MESG
527
DELISTED
XURA INC COM (DE)
MESG
| $146K | 0.01% |
+7,446
| New | +$146K |
|
528
Vanguard High Dividend Yield ETF
VYM
$64.7B
| $146K | 0.01% |
+2,121
| New | +$146K |
|
|
DSKY
529
DELISTED
IDREAMSKY TECHNOLOGY LTD ADS REPTSG SHS CL A
DSKY
| $146K | 0.01% |
10,657
-2,812
| -21% | -$38.5K |
|
530
BlackBerry
BB
$2.25B
| $145K | 0.01% |
17,994
+8,355
| +87% | +$67.3K |
|
|
IPXL
531
DELISTED
Impax Laboratories, Inc.
IPXL
| $145K | 0.01% |
+4,550
| New | +$145K |
|
532
Deckers Outdoor
DECK
$16.9B
| $144K | 0.01% |
14,484
+13,770
| +1,929% | +$137K |
|
533
iShares Europe ETF
IEV
$2.32B
| $143K | 0.01% |
3,658
+3,591
| +5,360% | +$140K |
|
534
Immersion
IMMR
$222M
| $143K | 0.01% |
17,370
-2,501
| -13% | -$20.6K |
|
535
United Rentals
URI
$60.8B
| $142K | 0.01% |
2,287
-12,359
| -84% | -$767K |
|
|
EXPR
536
DELISTED
Express, Inc.
EXPR
| $142K | 0.01% |
333
-178
| -35% | -$75.9K |
|
537
Hewlett Packard
HPE
$32.2B
| $141K | 0.01% |
13,764
-2,581
| -16% | -$26.4K |
|
|
LLL
538
DELISTED
L3 Technologies, Inc.
LLL
| $141K | 0.01% |
1,190
-872
| -42% | -$103K |
|
539
Coeur Mining
CDE
$9.6B
| $140K | 0.01% |
25,088
+22,278
| +793% | +$124K |
|
540
Global X Silver Miners ETF NEW
SIL
$3.09B
| $140K | 0.01% |
+5,311
| New | +$140K |
|
541
Green Plains
GPRE
$635M
| $138K | 0.01% |
8,688
+6,057
| +230% | +$96.2K |
|
542
Ziff Davis
ZD
$1.5B
| $138K | 0.01% |
2,588
+2,404
| +1,307% | +$128K |
|
|
INXN
543
DELISTED
Interxion Holding N.V.
INXN
| $138K | 0.01% |
+3,996
| New | +$138K |
|
|
ANTE
544
AirNet Technology Inc. Ordinary Share
ANTE
$539M
| $137K | 0.01% |
1,225
+704
| +135% | +$78.7K |
|
545
Synchronoss Technologies
SNCR
$62.8M
| $137K | 0.01% |
+473
| New | +$137K |
|
|
QEP
546
DELISTED
QEP RESOURCES, INC.
QEP
| $137K | 0.01% |
9,732
+4,989
| +105% | +$70.2K |
|
|
WAIR
547
DELISTED
WESCO Aircraft Holdings Inc.
WAIR
| $137K | 0.01% |
+9,574
| New | +$137K |
|
548
Navigator Holdings
NVGS
$1.1B
| $136K | 0.01% |
8,427
+3,509
| +71% | +$56.6K |
|
|
KDNY
549
DELISTED
Chinook Therapeutics, Inc. Common Stock
KDNY
| $136K | 0.01% |
+2,130
| New | +$136K |
|
|
NTRI
550
DELISTED
NutriSystem, Inc.
NTRI
| $136K | 0.01% |
+6,560
| New | +$136K |
|