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 |
SPDR Gold Trust
GLD
|
+$31.6M |
| 2 |
iShares Silver Trust
SLV
|
+$28.1M |
| 3 |
State Street SPDR Dow Jones Industrial Average ETF Trust
DIA
|
+$25.1M |
| 4 |
JPMorgan Chase
JPM
|
+$24.5M |
| 5 |
Direxion Daily Junior Gold Miners Index Bull 2X ETF
JNUG
|
+$24M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Alphabet (Google) Class C
GOOG
|
+$51.6M |
| 2 |
Amazon
AMZN
|
+$47.4M |
| 3 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$44.7M |
| 4 |
Netflix
NFLX
|
+$38.3M |
| 5 |
NVIDIA
NVDA
|
+$31.1M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.49% |
| 2 | Healthcare | 0.33% |
| 3 | Consumer Discretionary | 0.32% |
| 4 | Financials | 0.16% |
| 5 | Communication Services | 0.16% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
2226
Qiagen
QGEN
$8.53B
| $711K | ﹤0.01% |
16,133
+12,693
| +369% | +$496K |
|
2227
CALL
Huntington Ingalls Industries
HII
$11.3B
| $710K | ﹤0.01% |
39
+7
| +22% | +$1.63K |
|
|
FSCT
2228
CALL
DELISTED
ForeScout Technologies, Inc. Common Stock
FSCT
| $710K | ﹤0.01% |
225
+194
| +626% | +$6.07K |
|
|
EPAY
2229
DELISTED
Bottomline Technologies Inc
EPAY
| $709K | ﹤0.01% |
19,350
-16,042
| -45% | -$739K |
|
|
TSG
2230
CALL
DELISTED
The Stars Group Inc.
TSG
| $708K | ﹤0.01% |
347
-311
| -47% | -$7K |
|
2231
CALL
Oshkosh
OSK
$9.67B
| $707K | ﹤0.01% |
110
+91
| +479% | +$7.13K |
|
2232
CALL
Skywest
SKYW
$4.11B
| $707K | ﹤0.01% |
270
+89
| +49% | +$4.34K |
|
2233
CALL
Veracyte
VCYT
$4.52B
| $707K | ﹤0.01% |
291
-26
| -8% | -$654 |
|
2234
PUT
Booz Allen Hamilton
BAH
$8.7B
| $706K | ﹤0.01% |
103
+38
| +58% | +$2.8K |
|
2235
CALL
Reinsurance Group of America
RGA
$15.7B
| $706K | ﹤0.01% |
84
+83
| +8,300% | +$10.8K |
|
2236
CALL
Lincoln National
LNC
$7.91B
| $705K | ﹤0.01% |
268
+36
| +16% | +$1.71K |
|
2237
Invitation Homes
INVH
$17.7B
| $704K | ﹤0.01% |
+32,961
| New | +$933K |
|
2238
CALL
Nice
NICE
$5.29B
| $703K | ﹤0.01% |
49
+20
| +69% | +$3.23K |
|
|
TECD
2239
DELISTED
Tech Data Corp
TECD
| $703K | ﹤0.01% |
5,380
+2,630
| +96% | +$364K |
|
2240
Credit Acceptance
CACC
$6B
| $702K | ﹤0.01% |
+2,747
| New | +$1.11M |
|
2241
PUT
FMC
FMC
$1.42B
| $702K | ﹤0.01% |
86
+5
| +6% | +$464 |
|
2242
CALL
Texas Roadhouse
TXRH
$12.7B
| $702K | ﹤0.01% |
170
+101
| +146% | +$5.58K |
|
2243
CALL
Wabtec
WAB
$51.1B
| $702K | ﹤0.01% |
146
-89
| -38% | -$6.11K |
|
2244
CALL
ADMA Biologics
ADMA
$1.92B
| $700K | ﹤0.01% |
2,434
+2,418
| +15,113% | +$8.36K |
|
2245
PUT
KB Home
KBH
$3.48B
| $700K | ﹤0.01% |
387
-1,313
| -77% | -$42.1K |
|
2246
Direxion Daily FTSE China Bear 3X ETF
YANG
$86.8M
| $700K | ﹤0.01% |
+773
| New | +$703K |
|
|
ABMD
2247
DELISTED
Abiomed Inc
ABMD
| $699K | ﹤0.01% |
+4,820
| New | +$800K |
|
|
PFPT
2248
CALL
DELISTED
Proofpoint, Inc.
PFPT
| $697K | ﹤0.01% |
68
+45
| +196% | +$5.25K |
|
2249
CALL
Floor & Decor
FND
$5.81B
| $696K | ﹤0.01% |
217
-228
| -51% | -$10.6K |
|
2250
CALL
Teradata
TDC
$2.68B
| $696K | ﹤0.01% |
340
-237
| -41% | -$5.46K |
|
Similar funds
Simplex Trading's Q1 2020 Portfolio in Review
As of Q1 2020, Simplex Trading held 8,783 positions worth $56.7B, up 24% from $45.7B the previous quarter. Its ten largest holdings account for 50% of the portfolio.
Simplex Trading's Q1 2020 filing shows 1,512 new, 3,249 increased, 2,705 reduced and 1,159 closed positions. Its largest new stake was SPDR Gold Trust: 212,230 shares worth $31.4M. The largest sale was Alphabet (Google) Class C, an estimated $51.6M.
By sector, the portfolio is most concentrated in Technology at 0.49% of assets, down from 0.75% a quarter earlier, followed by Healthcare and Consumer Discretionary.
- Simplex Trading's largest Q1 2020 buy was SPDR Gold Trust: 212,230 shares worth $31.4M.
- Simplex Trading added most to JPMorgan Chase in Q1 2020, an estimated $24.5M increase.
- Simplex Trading's biggest Q1 2020 reduction was Amazon, cutting an estimated $47.4M.
- Simplex Trading fully exited Alphabet (Google) Class C in Q1 2020, selling an estimated $51.6M.
- Simplex Trading's ten largest holdings make up 50% of its $56.7B portfolio in Q1 2020.
- Simplex Trading opened 1,512 new positions and closed 1,159 in Q1 2020.
- Simplex Trading's portfolio value rose 24% quarter-over-quarter to $56.7B.
Based on Simplex Trading's 13F filing for Q1 2020, filed 29 Apr 2020.