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 |
Alibaba
BABA
|
+$50.3M |
| 2 |
Boeing
BA
|
+$24.3M |
| 3 |
SPDR Gold Trust
GLD
|
+$18.3M |
| 4 |
Biogen
BIIB
|
+$15.9M |
| 5 |
FedEx
FDX
|
+$15.1M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Alphabet (Google) Class C
GOOG
|
+$60.3M |
| 2 |
iShares Russell 2000 ETF
IWM
|
+$36.4M |
| 3 |
Netflix
NFLX
|
+$19M |
| 4 |
State Street Industrial Select Sector SPDR ETF
XLI
|
+$17.3M |
| 5 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$14.2M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Consumer Discretionary | 0.49% |
| 2 | Technology | 0.48% |
| 3 | Healthcare | 0.35% |
| 4 | Industrials | 0.35% |
| 5 | Communication Services | 0.21% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
|
LCI
1651
PUT
DELISTED
Lannett Company, Inc.
LCI
| $1.38M | ﹤0.01% |
307
-59
| -16% | -$2.01K |
|
1652
VanEck Oil Services ETF
OIH
$2.06B
| $1.38M | ﹤0.01% |
+5,853
| New | +$1.52M |
|
1653
PVH
PVH
$3.71B
| $1.38M | ﹤0.01% |
15,590
-9,293
| -37% | -$776K |
|
|
I
1654
DELISTED
INTELSAT S. A.
I
| $1.38M | ﹤0.01% |
60,325
+36,258
| +151% | +$765K |
|
1655
CALL
NOV
NOV
$7.45B
| $1.37M | ﹤0.01% |
647
+74
| +13% | +$1.58K |
|
|
MNDT
1656
PUT
DELISTED
Mandiant, Inc. Common Stock
MNDT
| $1.37M | ﹤0.01% |
1,028
+149
| +17% | +$2.12K |
|
1657
CALL
RingCentral
RNG
$4.05B
| $1.37M | ﹤0.01% |
109
-87
| -44% | -$11.4K |
|
1658
PUT
Keurig Dr Pepper
KDP
$40.4B
| $1.37M | ﹤0.01% |
501
+263
| +111% | +$7.34K |
|
1659
CALL
Middleby
MIDD
$6.05B
| $1.37M | ﹤0.01% |
117
+100
| +588% | +$12.3K |
|
1660
CALL
Pacira BioSciences
PCRX
$1.02B
| $1.37M | ﹤0.01% |
359
+167
| +87% | +$6.67K |
|
1661
iShares Biotechnology ETF
IBB
$9.31B
| $1.36M | ﹤0.01% |
+13,721
| New | +$1.44M |
|
1662
PUT
Pricesmart
PSMT
$5.75B
| $1.36M | ﹤0.01% |
192
+139
| +262% | +$8.43K |
|
1663
CALL
Red Rock Resorts
RRR
$3.74B
| $1.36M | ﹤0.01% |
672
+620
| +1,192% | +$12.9K |
|
1664
CALL
Liberty Global Class C
LBTYK
$3.27B
| $1.36M | ﹤0.01% |
560
-357
| -39% | -$9.3K |
|
1665
CALL
Floor & Decor
FND
$5.81B
| $1.36M | ﹤0.01% |
266
+162
| +156% | +$7.28K |
|
1666
CALL
ScottsMiracle-Gro
SMG
$4.03B
| $1.35M | ﹤0.01% |
133
-6
| -4% | -$628 |
|
1667
Newell Brands
NWL
$2.16B
| $1.35M | ﹤0.01% |
+72,117
| New | +$1.16M |
|
|
NAV
1668
CALL
DELISTED
Navistar International
NAV
| $1.35M | ﹤0.01% |
480
+246
| +105% | +$6.99K |
|
|
MNTV
1669
PUT
DELISTED
Momentive Global Inc. Common Stock
MNTV
| $1.34M | ﹤0.01% |
786
+598
| +318% | +$10.4K |
|
1670
CALL
Fortinet
FTNT
$112B
| $1.34M | ﹤0.01% |
875
+310
| +55% | +$5.03K |
|
1671
Lincoln National
LNC
$7.91B
| $1.34M | ﹤0.01% |
22,278
+22,077
| +10,984% | +$1.32M |
|
|
ATH
1672
CALL
DELISTED
Athene Holding Ltd. Class A Common Shares
ATH
| $1.34M | ﹤0.01% |
319
+29
| +10% | +$1.19K |
|
1673
PUT
Planet Fitness
PLNT
$4.23B
| $1.34M | ﹤0.01% |
231
-404
| -64% | -$28.5K |
|
1674
CALL
Waste Management
WM
$95.9B
| $1.33M | ﹤0.01% |
116
-79
| -41% | -$9.23K |
|
1675
CALL
Pembina Pipeline
PBA
$29.9B
| $1.33M | ﹤0.01% |
359
+347
| +2,892% | +$12.9K |
|
Similar funds
Simplex Trading's Q3 2019 Portfolio in Review
As of Q3 2019, Simplex Trading held 8,410 positions worth $35.2B, down 4.1% from $36.6B the previous quarter. Its ten largest holdings account for 33% of the portfolio.
Simplex Trading's Q3 2019 filing shows 1,312 new, 3,129 increased, 2,596 reduced and 1,163 closed positions. Its largest new stake was SPDR Gold Trust: 131,281 shares worth $18.2M. The largest sale was Alphabet (Google) Class C, an estimated $60.3M.
By sector, the portfolio is most concentrated in Consumer Discretionary at 0.49% of assets, up from 0.26% a quarter earlier, followed by Technology and Healthcare.
- Simplex Trading's largest Q3 2019 buy was SPDR Gold Trust: 131,281 shares worth $18.2M.
- Simplex Trading added most to Alibaba in Q3 2019, an estimated $50.3M increase.
- Simplex Trading's biggest Q3 2019 reduction was Alphabet (Google) Class C, cutting an estimated $60.3M.
- Simplex Trading fully exited iShares Russell 2000 ETF in Q3 2019, selling an estimated $36.4M.
- Simplex Trading's ten largest holdings make up 33% of its $35.2B portfolio in Q3 2019.
- Simplex Trading opened 1,312 new positions and closed 1,163 in Q3 2019.
- Simplex Trading's portfolio value fell 4.1% quarter-over-quarter to $35.2B.
Based on Simplex Trading's 13F filing for Q3 2019, filed 15 Oct 2019.