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 |
Microsoft
MSFT
|
+$101M |
| 2 |
NVIDIA
NVDA
|
+$66M |
| 3 |
Citigroup
C
|
+$51.8M |
| 4 |
Berkshire Hathaway Class B
BRK.B
|
+$42.7M |
| 5 |
SPDR Gold Trust
GLD
|
+$39.4M |
Top Sells
| 1 |
Apple
AAPL
|
+$411M |
| 2 |
Vanguard S&P 500 ETF
VOO
|
+$64M |
| 3 |
Meta Platforms (Facebook)
META
|
+$39.8M |
| 4 |
iShares Core S&P 500 ETF
IVV
|
+$34.3M |
| 5 |
PayPal
PYPL
|
+$32.9M |
Sector Composition
| 1 | Technology | 17.4% |
| 2 | Financials | 12.04% |
| 3 | Consumer Discretionary | 10.17% |
| 4 | Healthcare | 8.63% |
| 5 | Industrials | 6.03% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
426
SandRidge Energy
SD
$418M
| $818K | ﹤0.01% |
50,190
+22,127
| +79% | +$361K |
|
|
EGIO
427
DELISTED
Edgio, Inc. Common Stock
EGIO
| $818K | ﹤0.01% |
7,359
+732
| +11% | +$81.4K |
|
428
Paylocity
PCTY
$9.49B
| $815K | ﹤0.01% |
+3,376
| New | +$815K |
|
|
AUY
429
DELISTED
Yamana Gold, Inc.
AUY
| $815K | ﹤0.01% |
179,962
-6,044
| -3% | -$27.4K |
|
430
American Resources Corp
AREC
$177M
| $814K | ﹤0.01% |
304,917
+184,854
| +154% | +$493K |
|
431
Fiverr
FVRR
$874M
| $813K | ﹤0.01% |
26,600
+24,740
| +1,330% | +$756K |
|
|
NNDM
432
Nano Dimension
NNDM
$330M
| $812K | ﹤0.01% |
339,874
-8,796
| -3% | -$21K |
|
433
Insulet
PODD
$24.8B
| $810K | ﹤0.01% |
+3,535
| New | +$810K |
|
434
Texas Roadhouse
TXRH
$11.2B
| $804K | ﹤0.01% |
9,220
-9,091
| -50% | -$793K |
|
435
Allstate
ALL
$52.7B
| $803K | ﹤0.01% |
6,449
+5,983
| +1,284% | +$745K |
|
436
Robinhood
HOOD
$105B
| $801K | ﹤0.01% |
79,321
-123,337
| -61% | -$1.25M |
|
437
Murphy USA
MUSA
$7.55B
| $800K | ﹤0.01% |
2,912
+2,420
| +492% | +$665K |
|
438
Wendy's
WEN
$1.89B
| $799K | ﹤0.01% |
+42,780
| New | +$799K |
|
439
Kinross Gold
KGC
$27.3B
| $798K | ﹤0.01% |
212,304
+39,899
| +23% | +$150K |
|
440
Apollo Global Management
APO
$76.9B
| $796K | ﹤0.01% |
17,139
-40,492
| -70% | -$1.88M |
|
441
Guidewire Software
GWRE
$21.6B
| $795K | ﹤0.01% |
12,924
+8,787
| +212% | +$541K |
|
442
GitLab
GTLB
$8.03B
| $791K | ﹤0.01% |
15,452
+8,100
| +110% | +$415K |
|
443
American Axle
AXL
$711M
| $788K | ﹤0.01% |
115,486
+80,489
| +230% | +$549K |
|
444
GXO Logistics
GXO
$5.83B
| $788K | ﹤0.01% |
22,489
+21,142
| +1,570% | +$741K |
|
445
ProShares UltraShort Yen
YCS
$30.6M
| $787K | ﹤0.01% |
24,214
+10,694
| +79% | +$348K |
|
446
Baker Hughes
BKR
$44.8B
| $786K | ﹤0.01% |
37,504
-32,779
| -47% | -$687K |
|
|
NVRO
447
DELISTED
NEVRO CORP.
NVRO
| $773K | ﹤0.01% |
+16,599
| New | +$773K |
|
448
First Trust Health Care AlphaDEX Fund
FXH
$936M
| $771K | ﹤0.01% |
7,940
+2,368
| +42% | +$230K |
|
449
T Rowe Price
TROW
$23.5B
| $770K | ﹤0.01% |
+7,333
| New | +$770K |
|
450
Delek Logistics
DKL
$2.34B
| $767K | ﹤0.01% |
15,072
+9,190
| +156% | +$468K |
|