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 |
Broadcom
AVGO
|
+$33.7M |
| 2 |
SPDR Gold Trust
GLD
|
+$17.8M |
| 3 |
iShares MSCI Emerging Markets ETF
EEM
|
+$14.3M |
| 4 |
State Street SPDR S&P MIDCAP 400 ETF Trust
MDY
|
+$11.9M |
| 5 |
Citigroup
C
|
+$8.7M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Apple
AAPL
|
+$34.2M |
| 2 |
GMCR
KEURIG GREEN MTN INC
GMCR
|
+$17.9M |
| 3 |
Chipotle Mexican Grill
CMG
|
+$14.7M |
| 4 |
Walt Disney
DIS
|
+$13.3M |
| 5 |
Booking.com
BKNG
|
+$12.1M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 7.64% |
| 2 | Communication Services | 6.85% |
| 3 | Consumer Discretionary | 4.92% |
| 4 | Healthcare | 4.57% |
| 5 | Financials | 4.22% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
|
AXLL
276
DELISTED
AXIALL CORP COM STK (DE)
AXLL
| $815K | 0.07% |
+37,337
| New | +$658K |
|
277
Illumina
ILMN
$29.4B
| $808K | 0.06% |
5,127
-4,806
| -48% | -$735K |
|
278
CALL
DuPont de Nemours
DD
$18.8B
| $800K | 0.06% |
1,524
+449
| +42% | +$53.8K |
|
279
CALL
PayPal
PYPL
$48.9B
| $800K | 0.06% |
5,836
+4,491
| +334% | +$162K |
|
280
Trip.com Group
TCOM
$26.9B
| $800K | 0.06% |
+18,085
| New | +$757K |
|
281
CALL
Procter & Gamble
PG
$349B
| $791K | 0.06% |
2,990
+1,192
| +66% | +$96K |
|
282
Direxion Daily Small Cap Bear 3x ETF
TZA
$206M
| $787K | 0.06% |
46
+23
| +100% | +$511K |
|
|
APC
283
CALL
DELISTED
Anadarko Petroleum
APC
| $787K | 0.06% |
3,387
+2,225
| +191% | +$90.3K |
|
284
Check Point Software Technologies
CHKP
$13.3B
| $783K | 0.06% |
+8,953
| New | +$720K |
|
|
B
285
CALL
Barrick Mining
B
$62.3B
| $772K | 0.06% |
3,540
+2,292
| +184% | +$26.7K |
|
286
Aflac
AFL
$62.7B
| $771K | 0.06% |
+24,450
| New | +$726K |
|
|
HES
287
CALL
DELISTED
Hess
HES
| $771K | 0.06% |
3,197
+2,601
| +436% | +$115K |
|
288
CALL
3M
MMM
$89B
| $768K | 0.06% |
1,568
+1,191
| +316% | +$153K |
|
289
JPMorgan Chase
JPM
$922B
| $767K | 0.06% |
12,956
-15,920
| -55% | -$930K |
|
290
CALL
Bausch Health
BHC
$1.71B
| $765K | 0.06% |
7,723
+4,311
| +126% | +$319K |
|
|
HIFR
291
DELISTED
InfraREIT, Inc.
HIFR
| $760K | 0.06% |
44,577
+44,571
| +742,850% | +$814K |
|
292
CALL
American Airlines Group
AAL
$10.1B
| $754K | 0.06% |
5,017
+703
| +16% | +$28.3K |
|
|
PF
293
DELISTED
Pinnacle Foods, Inc.
PF
| $754K | 0.06% |
16,879
+2,683
| +19% | +$116K |
|
|
PXD
294
CALL
DELISTED
Pioneer Natural Resource Co.
PXD
| $751K | 0.06% |
718
-141
| -16% | -$17.5K |
|
|
TYNS
295
PUT
DELISTED
Direxion Daily 7-10 Year Treasury Bear 1X Shares
TYNS
| $751K | 0.06% |
4,086
+1,449
| +55% | +$41.4K |
|
296
O'Reilly Automotive
ORLY
$71.8B
| $750K | 0.06% |
41,130
+29,265
| +247% | +$500K |
|
297
PUT
MannKind Corp
MNKD
$1.2B
| $740K | 0.06% |
425
-107
| -20% | -$611 |
|
298
PUT
VanEck Gold Miners ETF
GDX
$23.3B
| $736K | 0.06% |
9,409
+713
| +8% | +$12.3K |
|
299
PUT
Morgan Stanley
MS
$343B
| $730K | 0.06% |
2,559
+1,830
| +251% | +$46.7K |
|
300
CALL
SLB Ltd
SLB
$71.2B
| $730K | 0.06% |
2,942
+1,596
| +119% | +$112K |
|
Similar funds
Simplex Trading's Q1 2016 Portfolio in Review
As of Q1 2016, Simplex Trading held 7,084 positions worth $1.25B, down 1.8% from $1.28B the previous quarter. Its ten largest holdings account for 17% of the portfolio.
Simplex Trading's Q1 2016 filing shows 1,678 new, 2,214 increased, 1,528 reduced and 1,505 closed positions. Its largest new stake was Broadcom: 2,493,400 shares worth $38.5M. The largest sale was Apple, an estimated $34.2M.
By sector, the portfolio is most concentrated in Technology at 7.6% of assets, up from 7% a quarter earlier, followed by Communication Services and Consumer Discretionary.
- Simplex Trading's largest Q1 2016 buy was Broadcom: 2,493,400 shares worth $38.5M.
- Simplex Trading added most to Citigroup in Q1 2016, an estimated $8.7M increase.
- Simplex Trading's biggest Q1 2016 reduction was Booking.com, cutting an estimated $12.1M.
- Simplex Trading fully exited Apple in Q1 2016, selling an estimated $34.2M.
- Simplex Trading's ten largest holdings make up 17% of its $1.25B portfolio in Q1 2016.
- Simplex Trading opened 1,678 new positions and closed 1,505 in Q1 2016.
- Simplex Trading's portfolio value fell 1.8% quarter-over-quarter to $1.25B.
Based on Simplex Trading's 13F filing for Q1 2016, filed 14 Apr 2016.