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 |
Alphabet (Google) Class C
GOOG
|
$54.1M |
| 2 |
Apple
AAPL
|
$28.6M |
| 3 |
Meta Platforms (Facebook)
META
|
$16.5M |
| 4 |
IBM
IBM
|
$13.4M |
| 5 |
Baidu
BIDU
|
$10.3M |
Top Sells
| 1 |
SPDR S&P 500 ETF Trust
SPY
|
$9.89M |
| 2 |
McDonald's
MCD
|
$8.52M |
| 3 |
Ralph Lauren
RL
|
$5.22M |
| 4 |
Intel
INTC
|
$4.74M |
| 5 |
WBA
Walgreens Boots Alliance
WBA
|
$4.67M |
Sector Composition
| 1 | Communication Services | 22.01% |
| 2 | Technology | 15.83% |
| 3 | Healthcare | 11.95% |
| 4 | Consumer Discretionary | 9.73% |
| 5 | Financials | 7.98% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
476
ProShares UltraShort Dow 30
DXD
$52.1M
| $198K | 0.02% |
+468
| New | +$198K |
|
477
Dollar General
DG
$24.1B
| $197K | 0.02% |
+2,537
| New | +$197K |
|
478
Magna International
MGA
$12.9B
| $197K | 0.02% |
+3,525
| New | +$197K |
|
|
POZN
479
DELISTED
POZEN INC
POZN
| $197K | 0.02% |
19,110
+12,439
| +186% | +$128K |
|
480
Chord Energy
CHRD
$5.92B
| $196K | 0.02% |
12,386
+6,530
| +112% | +$103K |
|
481
H&R Block
HRB
$6.85B
| $194K | 0.02% |
6,576
-2,843
| -30% | -$83.9K |
|
|
RRMS
482
DELISTED
ROSE ROCK MIDSTREAM L P COM UNIT REPSTG LTD (DE)
RRMS
| $194K | 0.02% |
4,171
+162
| +4% | +$7.54K |
|
483
Anywhere Real Estate
HOUS
$724M
| $193K | 0.02% |
4,148
-3,730
| -47% | -$174K |
|
|
SAGE
484
DELISTED
Sage Therapeutics
SAGE
| $190K | 0.02% |
+2,606
| New | +$190K |
|
485
Kellanova
K
$27.8B
| $187K | 0.02% |
3,181
+2,671
| +524% | +$157K |
|
486
Edwards Lifesciences
EW
$47.5B
| $186K | 0.02% |
7,866
-14,874
| -65% | -$352K |
|
487
Huntsman Corp
HUN
$1.95B
| $186K | 0.02% |
+8,473
| New | +$186K |
|
488
Stryker
SYK
$150B
| $186K | 0.02% |
1,954
-691
| -26% | -$65.8K |
|
|
AXLL
489
DELISTED
AXIALL CORP COM STK (DE)
AXLL
| $186K | 0.02% |
+5,169
| New | +$186K |
|
|
NKY
490
DELISTED
PRECIDIAN INVESTMENTS MAXIS NIKKEI 225 INDEX
NKY
| $186K | 0.02% |
+9,561
| New | +$186K |
|
|
CHIX
491
DELISTED
Global X MSCI China Financials ETF
CHIX
| $186K | 0.02% |
10,370
+7,378
| +247% | +$132K |
|
492
Wolverine World Wide
WWW
$2.59B
| $185K | 0.02% |
+6,526
| New | +$185K |
|
493
ProShares UltraShort NASDAQ Biotechnology
BIS
$2.3M
| $184K | 0.02% |
1,608
+954
| +146% | +$109K |
|
494
Silicon Laboratories
SLAB
$4.45B
| $184K | 0.02% |
3,424
+2,943
| +612% | +$158K |
|
|
ETP
495
DELISTED
Energy Transfer Partners, L.P.
ETP
| $183K | 0.02% |
4,823
+3,521
| +270% | +$134K |
|
496
Global Payments
GPN
$21.3B
| $182K | 0.02% |
3,524
+3,364
| +2,103% | +$174K |
|
497
FMC
FMC
$4.72B
| $181K | 0.02% |
+3,977
| New | +$181K |
|
498
iShares International Select Dividend ETF
IDV
$5.74B
| $181K | 0.02% |
5,618
+5,513
| +5,250% | +$178K |
|
|
CST
499
DELISTED
CST Brands, Inc.
CST
| $181K | 0.02% |
4,645
-338
| -7% | -$13.2K |
|
|
IMOS
500
ChipMOS TECHNOLOGIES
IMOS
$620M
| $180K | 0.02% |
7,480
+7,209
| +2,660% | +$173K |
|