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
|
$54.6M |
| 2 |
iShares Russell 2000 ETF
IWM
|
$52.5M |
| 3 |
SPDR S&P 500 ETF Trust
SPY
|
$40.9M |
| 4 |
Apple
AAPL
|
$16.5M |
| 5 |
Visa
V
|
$12M |
Top Sells
| 1 |
Amazon
AMZN
|
$98.7M |
| 2 |
Meta Platforms (Facebook)
META
|
$70.7M |
| 3 |
Invesco QQQ Trust
QQQ
|
$33.4M |
| 4 |
Goldman Sachs
GS
|
$30.2M |
| 5 |
Boeing
BA
|
$26.5M |
Sector Composition
| 1 | Communication Services | 14.71% |
| 2 | Consumer Discretionary | 14.32% |
| 3 | Technology | 11.86% |
| 4 | Financials | 7.38% |
| 5 | Industrials | 6.44% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
AKRX
401
DELISTED
Akorn, Inc.
AKRX
| $433K | ﹤0.01% |
+128,012
| New | +$433K |
|
402
Direxion Daily Junior Gold Miners Index Bear 2X Shares
JDST
$46.5M
| $430K | ﹤0.01% |
34
-44
| -56% | -$556K |
|
403
Madrigal Pharmaceuticals
MDGL
$9.65B
| $429K | ﹤0.01% |
3,807
+2,722
| +251% | +$307K |
|
404
Wyndham Hotels & Resorts
WH
$6.59B
| $429K | ﹤0.01% |
9,462
-8,552
| -47% | -$388K |
|
405
Avis
CAR
$5.5B
| $428K | ﹤0.01% |
19,060
-13,446
| -41% | -$302K |
|
406
Fortive
FTV
$16.2B
| $427K | ﹤0.01% |
+7,557
| New | +$427K |
|
|
NBIS
407
Nebius Group N.V. Class A Ordinary Shares
NBIS
$15.6B
| $426K | ﹤0.01% |
15,596
-67,764
| -81% | -$1.85M |
|
|
ICPT
408
DELISTED
Intercept Pharmaceuticals, Inc.
ICPT
| $426K | ﹤0.01% |
4,231
-7,271
| -63% | -$732K |
|
409
Watsco
WSO
$16.6B
| $425K | ﹤0.01% |
3,056
+2,945
| +2,653% | +$410K |
|
410
Koppers
KOP
$569M
| $423K | ﹤0.01% |
24,861
+19,137
| +334% | +$326K |
|
411
Melco Resorts & Entertainment
MLCO
$3.8B
| $423K | ﹤0.01% |
24,058
-18,757
| -44% | -$330K |
|
|
EPAY
412
DELISTED
Bottomline Technologies Inc
EPAY
| $423K | ﹤0.01% |
8,824
+8,180
| +1,270% | +$392K |
|
413
Usana Health Sciences
USNA
$581M
| $420K | ﹤0.01% |
+3,568
| New | +$420K |
|
414
Ovintiv
OVV
$10.6B
| $419K | ﹤0.01% |
14,509
+2,534
| +21% | +$73.2K |
|
415
American Eagle Outfitters
AEO
$3.26B
| $415K | ﹤0.01% |
+21,518
| New | +$415K |
|
416
Direxion Daily Energy Bull 2X Shares
ERX
$218M
| $415K | ﹤0.01% |
+2,741
| New | +$415K |
|
417
Etsy
ETSY
$5.36B
| $415K | ﹤0.01% |
8,737
+389
| +5% | +$18.5K |
|
418
YPF
YPF
$12.1B
| $415K | ﹤0.01% |
+31,009
| New | +$415K |
|
419
Golar LNG
GLNG
$4.52B
| $412K | ﹤0.01% |
18,935
-2,177
| -10% | -$47.4K |
|
420
MGIC Investment
MTG
$6.55B
| $411K | ﹤0.01% |
39,328
+32,632
| +487% | +$341K |
|
|
SPA
421
DELISTED
Sparton
SPA
| $411K | ﹤0.01% |
22,615
+20,083
| +793% | +$365K |
|
422
Pool Corp
POOL
$12.4B
| $408K | ﹤0.01% |
+2,746
| New | +$408K |
|
423
Ingersoll Rand
IR
$32.2B
| $407K | ﹤0.01% |
19,932
+15,101
| +313% | +$308K |
|
424
KLA
KLAC
$119B
| $405K | ﹤0.01% |
+4,533
| New | +$405K |
|
425
Global X Lithium & Battery Tech ETF
LIT
$1.16B
| $404K | ﹤0.01% |
14,999
+11,322
| +308% | +$305K |
|