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 |
Apple
AAPL
|
$80M |
| 2 |
iShares 20+ Year Treasury Bond ETF
TLT
|
$45.3M |
| 3 |
Alphabet (Google) Class C
GOOG
|
$38.8M |
| 4 |
Amazon
AMZN
|
$38.6M |
| 5 |
Tesla
TSLA
|
$36M |
Top Sells
| 1 |
Alibaba
BABA
|
$46.4M |
| 2 |
Boeing
BA
|
$29.8M |
| 3 |
SPDR Gold Trust
GLD
|
$18.2M |
| 4 |
Biogen
BIIB
|
$15.8M |
| 5 |
NVIDIA
NVDA
|
$14.3M |
Sector Composition
| 1 | Technology | 22.73% |
| 2 | Consumer Discretionary | 17.54% |
| 3 | Communication Services | 10.03% |
| 4 | Healthcare | 9.29% |
| 5 | Industrials | 5.63% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
551
SPDR Bloomberg 1-3 Month T-Bill ETF
BIL
$42B
| $356K | ﹤0.01% |
+3,900
| New | +$356K |
|
552
Ionis Pharmaceuticals
IONS
$9.76B
| $354K | ﹤0.01% |
5,870
-10,365
| -64% | -$625K |
|
553
ATI
ATI
$10.7B
| $353K | ﹤0.01% |
17,107
-20,404
| -54% | -$421K |
|
|
PFPT
554
DELISTED
Proofpoint, Inc.
PFPT
| $352K | ﹤0.01% |
3,071
-11,131
| -78% | -$1.28M |
|
555
Insperity
NSP
$2.03B
| $350K | ﹤0.01% |
+4,073
| New | +$350K |
|
556
Range Resources
RRC
$8.27B
| $350K | ﹤0.01% |
72,273
+43,433
| +151% | +$210K |
|
557
Ambac
AMBC
$422M
| $349K | ﹤0.01% |
16,214
+8,482
| +110% | +$183K |
|
558
Papa John's
PZZA
$1.58B
| $347K | ﹤0.01% |
+5,501
| New | +$347K |
|
559
Invesco CurrencyShares Canadian Dollar Trust
FXC
$91.7M
| $346K | ﹤0.01% |
4,557
+1,625
| +55% | +$123K |
|
|
RP
560
DELISTED
RealPage, Inc.
RP
| $346K | ﹤0.01% |
6,443
+5,308
| +468% | +$285K |
|
561
SPX Corp
SPXC
$9.28B
| $345K | ﹤0.01% |
6,796
+6,594
| +3,264% | +$335K |
|
|
SYKE
562
DELISTED
SYKES Enterprises Inc
SYKE
| $345K | ﹤0.01% |
+9,334
| New | +$345K |
|
563
Evolent Health
EVH
$1.11B
| $341K | ﹤0.01% |
37,743
-7,522
| -17% | -$68K |
|
564
Expeditors International
EXPD
$16.4B
| $341K | ﹤0.01% |
4,371
+3,638
| +496% | +$284K |
|
|
AAN.A
565
DELISTED
AARON'S INC CL-A
AAN.A
| $341K | ﹤0.01% |
+5,974
| New | +$341K |
|
566
CME Group
CME
$94.4B
| $339K | ﹤0.01% |
+1,693
| New | +$339K |
|
|
ATNX
567
DELISTED
Athenex, Inc. Common Stock
ATNX
| $336K | ﹤0.01% |
+1,103
| New | +$336K |
|
|
TEN
568
DELISTED
Tenneco Inc. Class A Voting Common Stock
TEN
| $335K | ﹤0.01% |
25,582
-48,324
| -65% | -$633K |
|
569
Calumet Specialty Products
CLMT
$1.55B
| $334K | ﹤0.01% |
91,616
+86,678
| +1,755% | +$316K |
|
570
uniQure
QURE
$985M
| $331K | ﹤0.01% |
4,625
-653
| -12% | -$46.7K |
|
|
SNP
571
DELISTED
CHINA PETROLEUM & CHEMICAL CORPORATION ADS (REP 100 ORDINARY H SHARES)
SNP
| $329K | ﹤0.01% |
5,473
-1,510
| -22% | -$90.8K |
|
572
Kodak
KODK
$477M
| $327K | ﹤0.01% |
70,528
+61,625
| +692% | +$286K |
|
573
ESCO Technologies
ESE
$5.23B
| $326K | ﹤0.01% |
+3,534
| New | +$326K |
|
|
MNTV
574
DELISTED
Momentive Global Inc. Common Stock
MNTV
| $326K | ﹤0.01% |
18,288
-8,845
| -33% | -$158K |
|
|
LOMA
575
Loma Negra
LOMA
$1.05B
| $325K | ﹤0.01% |
41,569
-13,590
| -25% | -$106K |
|