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 |
iShares Russell 2000 ETF
IWM
|
+$27.5M |
| 2 |
SPDR Dow Jones Industrial Average ETF Trust
DIA
|
+$16.3M |
| 3 |
Walt Disney
DIS
|
+$13.9M |
| 4 |
iShares MSCI Emerging Markets ETF
EEM
|
+$10.4M |
| 5 |
Gilead Sciences
GILD
|
+$10.4M |
Top Sells
| 1 |
Alphabet (Google) Class C
GOOG
|
+$95.3M |
| 2 |
Apple
AAPL
|
+$21.1M |
| 3 |
Meta Platforms (Facebook)
META
|
+$20M |
| 4 |
IBM
IBM
|
+$13.4M |
| 5 |
Baidu
BIDU
|
+$12.1M |
Sector Composition
| 1 | Healthcare | 13.63% |
| 2 | Communication Services | 9.81% |
| 3 | Consumer Discretionary | 9.7% |
| 4 | Technology | 9.67% |
| 5 | Financials | 9.48% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
CMCSK
426
DELISTED
COMCAST CORP SPL A (NEW)
CMCSK
| $230K | 0.02% |
4,033
+3,091
| +328% | +$176K |
|
427
Huntsman Corp
HUN
$1.89B
| $228K | 0.02% |
23,630
+15,157
| +179% | +$146K |
|
|
JO
428
DELISTED
iPath Bloomberg Coffee Subindex Total Return ETN due June 24, 2038
JO
| $228K | 0.02% |
+11,630
| New | +$228K |
|
429
Melco Resorts & Entertainment
MLCO
$3.81B
| $227K | 0.02% |
16,544
-106,508
| -87% | -$1.46M |
|
430
Stellantis
STLA
$25.2B
| $227K | 0.02% |
26,384
+20,835
| +375% | +$179K |
|
431
Bank of New York Mellon
BK
$73.2B
| $226K | 0.02% |
5,779
+183
| +3% | +$7.16K |
|
|
CAM
432
DELISTED
CAMERON INTERNATIONAL CORPORATION
CAM
| $226K | 0.02% |
+3,700
| New | +$226K |
|
433
Toronto Dominion Bank
TD
$130B
| $225K | 0.02% |
5,721
+3,771
| +193% | +$148K |
|
434
Eli Lilly
LLY
$671B
| $224K | 0.02% |
2,681
-2,259
| -46% | -$189K |
|
435
ProShares UltraPro S&P 500
UPRO
$4.62B
| $224K | 0.02% |
25,818
-38,646
| -60% | -$335K |
|
436
Immersion
IMMR
$221M
| $223K | 0.02% |
+19,864
| New | +$223K |
|
437
Ionis Pharmaceuticals
IONS
$10.1B
| $221K | 0.02% |
5,477
-45,022
| -89% | -$1.82M |
|
|
ONIT
438
Onity Group Inc.
ONIT
$352M
| $220K | 0.02% |
2,188
+1,767
| +420% | +$178K |
|
439
Global X MSCI Greece ETF
GREK
$303M
| $219K | 0.02% |
+7,609
| New | +$219K |
|
440
ProShares UltraShort MidCap400
MZZ
$1.15M
| $219K | 0.02% |
+1,261
| New | +$219K |
|
|
DMND
441
DELISTED
DIAMOND FOODS, INC.
DMND
| $218K | 0.02% |
7,096
-10,406
| -59% | -$320K |
|
442
Freeport-McMoran
FCX
$64.6B
| $217K | 0.02% |
22,494
+8,982
| +66% | +$86.7K |
|
443
Schlumberger
SLB
$53.6B
| $217K | 0.02% |
3,157
-8,135
| -72% | -$559K |
|
|
PHH
444
DELISTED
PHH Corporation
PHH
| $215K | 0.02% |
+15,252
| New | +$215K |
|
|
PERY
445
DELISTED
Perry Ellis International Inc
PERY
| $214K | 0.02% |
9,763
+7,040
| +259% | +$154K |
|
446
Illinois Tool Works
ITW
$76.6B
| $211K | 0.02% |
+2,569
| New | +$211K |
|
447
Direxion Daily 20+ Year Treasury Bear 3X Shares
TMV
$161M
| $211K | 0.02% |
3,084
-2,076
| -40% | -$142K |
|
448
CarMax
KMX
$8.94B
| $210K | 0.02% |
3,556
+985
| +38% | +$58.2K |
|
449
Madison Square Garden
MSGS
$4.95B
| $210K | 0.02% |
4,099
+4,004
| +4,215% | +$205K |
|
450
Herbalife
HLF
$958M
| $209K | 0.02% |
+7,698
| New | +$209K |
|