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
|
+$70.1M |
| 2 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$46.6M |
| 3 |
Alphabet (Google) Class C
GOOG
|
+$37.4M |
| 4 |
Amazon
AMZN
|
+$37M |
| 5 |
Tesla
TSLA
|
+$28M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Alibaba
BABA
|
+$41M |
| 2 |
Boeing
BA
|
+$27.8M |
| 3 |
Biogen
BIIB
|
+$18.9M |
| 4 |
SPDR Gold Trust
GLD
|
+$18.3M |
| 5 |
State Street SPDR Dow Jones Industrial Average ETF Trust
DIA
|
+$13.6M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.75% |
| 2 | Consumer Discretionary | 0.58% |
| 3 | Communication Services | 0.33% |
| 4 | Healthcare | 0.31% |
| 5 | Industrials | 0.19% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
1076
PUT
Lincoln National
LNC
$7.81B
| $3.33M | 0.01% |
564
+462
| +453% | +$27.2K |
|
1077
PUT
iQIYI
IQ
$1.17B
| $3.32M | 0.01% |
1,572
-757
| -33% | -$13.9K |
|
1078
Uber
UBER
$140B
| $3.31M | 0.01% |
+111,374
| New | +$3.3M |
|
1079
CALL
Global Payments
GPN
$21.3B
| $3.3M | 0.01% |
181
-448
| -71% | -$76.9K |
|
1080
PUT
Kinder Morgan
KMI
$72.9B
| $3.3M | 0.01% |
1,559
+221
| +17% | +$4.47K |
|
1081
PUT
Westlake Corp
WLK
$9.64B
| $3.3M | 0.01% |
470
-47
| -9% | -$3.16K |
|
1082
PUT
Franco-Nevada
FNV
$41.3B
| $3.29M | 0.01% |
319
-56
| -15% | -$5.41K |
|
1083
PUT
Edwards Lifesciences
EW
$48.3B
| $3.29M | 0.01% |
423
-750
| -64% | -$58.6K |
|
1084
CALL
Teradyne
TER
$58.5B
| $3.29M | 0.01% |
482
+22
| +5% | +$1.4K |
|
|
KSU
1085
CALL
DELISTED
Kansas City Southern
KSU
| $3.28M | 0.01% |
214
+151
| +240% | +$22.2K |
|
1086
PUT
Regency Centers
REG
$14.9B
| $3.27M | 0.01% |
+519
| New | +$34.1K |
|
|
FITB
1087
CALL
Fifth Third Bancorp
FITB
$51.8B
| $3.27M | 0.01% |
1,065
+40
| +4% | +$1.17K |
|
1088
PUT
Hasbro
HAS
$12.4B
| $3.27M | 0.01% |
310
+15
| +5% | +$1.56K |
|
1089
CALL
RingCentral
RNG
$3.24B
| $3.27M | 0.01% |
194
+85
| +78% | +$14K |
|
1090
PUT
Weibo
WB
$1.92B
| $3.26M | 0.01% |
704
+131
| +23% | +$6.13K |
|
1091
CALL
PBF Energy
PBF
$7.33B
| $3.26M | 0.01% |
1,040
+432
| +71% | +$13.3K |
|
1092
VanEck Gold Miners ETF
GDX
$22.9B
| $3.26M | 0.01% |
+111,288
| New | +$3.04M |
|
|
LOGM
1093
CALL
DELISTED
LogMein, Inc.
LOGM
| $3.26M | 0.01% |
380
+149
| +65% | +$11.1K |
|
|
ZGNX
1094
PUT
DELISTED
Zogenix, Inc.
ZGNX
| $3.25M | 0.01% |
623
+264
| +74% | +$12.1K |
|
|
SIVB
1095
CALL
DELISTED
SVB Financial Group
SIVB
| $3.24M | 0.01% |
129
+17
| +15% | +$3.87K |
|
1096
CALL
Acadia Pharmaceuticals
ACAD
$4.25B
| $3.23M | 0.01% |
756
+182
| +32% | +$7.92K |
|
1097
PUT
Bath & Body Works
BBWI
$3.9B
| $3.23M | 0.01% |
2,202
+214
| +11% | +$3.09K |
|
1098
PUT
Cognizant
CTSH
$20.3B
| $3.22M | 0.01% |
519
-281
| -35% | -$17.4K |
|
|
CRON
1099
CALL
Cronos Group
CRON
$1.02B
| $3.21M | 0.01% |
4,189
+1,037
| +33% | +$7.93K |
|
1100
PUT
Copart
CPRT
$25.2B
| $3.21M | 0.01% |
1,412
+1,236
| +702% | +$26.4K |
|
Similar funds
Simplex Trading's Q4 2019 Portfolio in Review
As of Q4 2019, Simplex Trading held 8,523 positions worth $45.7B, up 30% from $35.2B the previous quarter. Its ten largest holdings account for 39% of the portfolio.
Simplex Trading's Q4 2019 filing shows 1,277 new, 3,072 increased, 2,710 reduced and 1,251 closed positions. Its largest new stake was Apple: 1,090,316 shares worth $80M. The largest sale was Alibaba, an estimated $41M.
By sector, the portfolio is most concentrated in Technology at 0.75% of assets, up from 0.48% a quarter earlier, followed by Consumer Discretionary and Communication Services.
- Simplex Trading's largest Q4 2019 buy was Apple: 1,090,316 shares worth $80M.
- Simplex Trading added most to iShares 20+ Year Treasury Bond ETF in Q4 2019, an estimated $46.6M increase.
- Simplex Trading's biggest Q4 2019 reduction was Alibaba, cutting an estimated $41M.
- Simplex Trading fully exited Boeing in Q4 2019, selling an estimated $27.8M.
- Simplex Trading's ten largest holdings make up 39% of its $45.7B portfolio in Q4 2019.
- Simplex Trading opened 1,277 new positions and closed 1,251 in Q4 2019.
- Simplex Trading's portfolio value rose 30% quarter-over-quarter to $45.7B.
Based on Simplex Trading's 13F filing for Q4 2019, filed 5 Feb 2020.