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
| Rank | Stock | Value |
|---|---|---|
| 1 |
Apple
AAPL
|
+$34.8M |
| 2 |
Bausch Health
BHC
|
+$20.3M |
| 3 |
Chipotle Mexican Grill
CMG
|
+$18.9M |
| 4 |
GMCR
KEURIG GREEN MTN INC
GMCR
|
+$12.3M |
| 5 |
Amazon
AMZN
|
+$12.2M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
iShares Russell 2000 ETF
IWM
|
+$27.5M |
| 2 |
State Street SPDR Dow Jones Industrial Average ETF Trust
DIA
|
+$13.8M |
| 3 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$12.1M |
| 4 |
Netflix
NFLX
|
+$10.7M |
| 5 |
iShares MSCI Emerging Markets ETF
EEM
|
+$10.7M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Consumer Discretionary | 9.5% |
| 2 | Healthcare | 7.55% |
| 3 | Technology | 7.01% |
| 4 | Communication Services | 6.66% |
| 5 | Industrials | 5.76% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
|
CBPO
576
DELISTED
China Biologic Products Holdings, Inc.
CBPO
| $348K | 0.03% |
2,445
+1,663
| +213% | +$192K |
|
577
CALL
FedEx
FDX
$74.7B
| $347K | 0.03% |
1,033
-1,199
| -54% | -$185K |
|
578
EQT Corp
EQT
$33.4B
| $345K | 0.03% |
12,163
+7,543
| +163% | +$253K |
|
|
HMIN
579
DELISTED
HOMEINNS HOTEL GROUP SPONSORED ADR
HMIN
| $345K | 0.03% |
+10,108
| New | +$314K |
|
|
DYAX
580
CALL
DELISTED
DYAX CORPORATION
DYAX
| $345K | 0.03% |
+692
| New | +$22.2K |
|
|
EJ
581
DELISTED
E HOUSE (CHINA) HOLDINGS LIMITED
EJ
| $344K | 0.03% |
54,774
+46,232
| +541% | +$286K |
|
|
HEES
582
DELISTED
H&E Equipment Services
HEES
| $343K | 0.03% |
19,675
+17,874
| +992% | +$328K |
|
583
PUT
McKesson
MCK
$96.5B
| $343K | 0.03% |
452
+40
| +10% | +$7.55K |
|
584
Synaptics
SYNA
$4.59B
| $343K | 0.03% |
+4,279
| New | +$363K |
|
585
PUT
Petrobras
PBR
$122B
| $342K | 0.03% |
1,175
+14
| +1% | +$68 |
|
|
GOLD
586
PUT
DELISTED
Randgold Resources Ltd
GOLD
| $341K | 0.03% |
237
+37
| +19% | +$2.34K |
|
587
Albemarle
ALB
$13.8B
| $340K | 0.03% |
+6,085
| New | +$313K |
|
588
CALL
American International
AIG
$41.4B
| $339K | 0.03% |
723
-670
| -48% | -$40.9K |
|
589
Standex International
SXI
$3.74B
| $339K | 0.03% |
4,086
+1,386
| +51% | +$117K |
|
590
CALL
Walmart Inc
WMT
$863B
| $338K | 0.03% |
9,792
+1,596
| +19% | +$32K |
|
|
FMI
591
DELISTED
Foundation Medicine, Inc.
FMI
| $336K | 0.03% |
15,983
+9,344
| +141% | +$180K |
|
592
Baxter International
BAX
$11.2B
| $335K | 0.03% |
8,800
-2,080
| -19% | -$76K |
|
593
Extra Space Storage
EXR
$30.7B
| $335K | 0.03% |
+3,799
| New | +$312K |
|
|
BDSI
594
PUT
DELISTED
BioDelivery Sciences International, Inc.
BDSI
| $334K | 0.03% |
659
-51
| -7% | -$289 |
|
|
CPGX
595
DELISTED
COLUMBIA PIPELINE GROUP IN COM STK (DE)
CPGX
| $333K | 0.03% |
16,699
+207
| +1% | +$4.1K |
|
596
iShares MSCI South Africa ETF
EZA
$520M
| $332K | 0.03% |
7,123
+1,046
| +17% | +$56.6K |
|
597
Public Storage
PSA
$58.8B
| $332K | 0.03% |
1,344
+1,152
| +600% | +$270K |
|
|
VIAB
598
PUT
DELISTED
Viacom Inc. Class B
VIAB
| $330K | 0.03% |
969
+204
| +27% | +$9.57K |
|
599
Teekay
TK
$973M
| $329K | 0.03% |
33,352
+29,755
| +827% | +$775K |
|
600
PUT
Target
TGT
$61.1B
| $328K | 0.03% |
1,053
-435
| -29% | -$32.5K |
|
Similar funds
Simplex Trading's Q4 2015 Portfolio in Review
As of Q4 2015, Simplex Trading held 7,008 positions worth $1.28B, down 6.4% from $1.36B the previous quarter. Its ten largest holdings account for 19% of the portfolio.
Simplex Trading's Q4 2015 filing shows 1,417 new, 1,993 increased, 1,803 reduced and 1,598 closed positions. Its largest new stake was Chipotle Mexican Grill: 1,548,150 shares worth $14.9M. The largest sale was iShares Russell 2000 ETF, an estimated $27.5M.
By sector, the portfolio is most concentrated in Consumer Discretionary at 9.5% of assets, up from 4.6% a quarter earlier, followed by Healthcare and Technology.
- Simplex Trading's largest Q4 2015 buy was Chipotle Mexican Grill: 1,548,150 shares worth $14.9M.
- Simplex Trading added most to Apple in Q4 2015, an estimated $34.8M increase.
- Simplex Trading's biggest Q4 2015 reduction was State Street SPDR Dow Jones Industrial Average ETF Trust, cutting an estimated $13.8M.
- Simplex Trading fully exited iShares Russell 2000 ETF in Q4 2015, selling an estimated $27.5M.
- Simplex Trading's ten largest holdings make up 19% of its $1.28B portfolio in Q4 2015.
- Simplex Trading opened 1,417 new positions and closed 1,598 in Q4 2015.
- Simplex Trading's portfolio value fell 6.4% quarter-over-quarter to $1.28B.
Based on Simplex Trading's 13F filing for Q4 2015, filed 20 Jan 2016.