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 | |
|---|---|---|---|---|---|---|
|
TUP
2126
PUT
DELISTED
Tupperware Brands Corporation
TUP
| $954K | ﹤0.01% |
1,113
+211
| +23% | +$2.3K |
|
2127
Methanex
MEOH
$4.32B
| $952K | ﹤0.01% |
+24,648
| New | +$924K |
|
2128
Vanguard Total Stock Market ETF
VTI
$654B
| $952K | ﹤0.01% |
+5,819
| New | +$912K |
|
2129
CALL
Cenovus Energy
CVE
$54.6B
| $950K | ﹤0.01% |
936
-17
| -2% | -$154 |
|
|
VAL
2130
PUT
DELISTED
Valaris plc Class A Ordinary Share
VAL
| $950K | ﹤0.01% |
1,449
-416
| -22% | -$2.03K |
|
|
EBIX
2131
PUT
DELISTED
Ebix Inc
EBIX
| $948K | ﹤0.01% |
284
-172
| -38% | -$6.36K |
|
2132
PUT
Lands' End
LE
$361M
| $947K | ﹤0.01% |
564
+325
| +136% | +$4.25K |
|
2133
CALL
Pinnacle Financial Partners Inc
PNFP
$15.5B
| $947K | ﹤0.01% |
148
+18
| +14% | +$1.09K |
|
2134
PUT
Enbridge
ENB
$124B
| $946K | ﹤0.01% |
238
+129
| +118% | +$4.82K |
|
2135
PUT
Sony
SONY
$123B
| $945K | ﹤0.01% |
695
+95
| +16% | +$1.18K |
|
2136
CALL
Liberty Media Series A
FWONA
$22.3B
| $944K | ﹤0.01% |
209
+86
| +70% | +$3.38K |
|
2137
Unilever
UL
$131B
| $944K | ﹤0.01% |
14,689
+8,608
| +142% | +$572K |
|
2138
PUT
AvalonBay Communities
AVB
$27.1B
| $943K | ﹤0.01% |
45
-122
| -73% | -$26.1K |
|
|
NVEE
2139
PUT
DELISTED
NV5 Global
NVEE
| $943K | ﹤0.01% |
748
-336
| -31% | -$4.9K |
|
2140
PUT
Trane Technologies
TT
$106B
| $943K | ﹤0.01% |
71
-59
| -45% | -$7.48K |
|
|
LOGM
2141
PUT
DELISTED
LogMein, Inc.
LOGM
| $943K | ﹤0.01% |
110
+38
| +53% | +$2.82K |
|
|
2142
CALL
Methanex
MEOH
$4.32B
| $942K | ﹤0.01% |
244
-32
| -12% | -$1.2K |
|
2143
Supernus Pharmaceuticals
SUPN
$2.68B
| $941K | ﹤0.01% |
39,688
+19,143
| +93% | +$465K |
|
|
KEM
2144
DELISTED
KEMET Corporation
KEM
| $941K | ﹤0.01% |
34,822
-45,782
| -57% | -$1.11M |
|
2145
PUT
Canadian Imperial Bank of Commerce
CM
$107B
| $940K | ﹤0.01% |
226
+84
| +59% | +$3.55K |
|
2146
Weibo
WB
$1.9B
| $940K | ﹤0.01% |
+20,299
| New | +$950K |
|
2147
NewMarket
NEU
$7.17B
| $939K | ﹤0.01% |
1,931
+1,615
| +511% | +$777K |
|
2148
PUT
NOV
NOV
$7.45B
| $939K | ﹤0.01% |
375
-60
| -14% | -$1.35K |
|
2149
PUT
Pricesmart
PSMT
$5.75B
| $937K | ﹤0.01% |
132
-60
| -31% | -$4.31K |
|
2150
CALL
Neurocrine Biosciences
NBIX
$17.7B
| $935K | ﹤0.01% |
87
-237
| -73% | -$24.8K |
|
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.