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Simplex Trading

Simplex Trading Portfolio holdings

AUM $149B
1-Year Est. Return 62.07%
 

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.

This Fund
S&P 500
This Quarter Est. Return
-17.92%
1 Year Est. Return
+62.07%
3 Year Est. Return
+116.86%
5 Year Est. Return
+116.02%
10 Year Est. Return
+774.44%
AUM
$94.1B
AUM Growth
-$15.3B
Cap. Flow
+$11.3B
Cap. Flow %
12.02%
Top 10 Hldgs %
40.12%
Holding
11,810
New
1,405
Increased
4,027
Reduced
4,289
Closed
1,792

Top Buys

Rank Stock Value
1
AAPL icon
Apple
AAPL
+$286M
2
VOO icon
Vanguard S&P 500 ETF
VOO
+$82.3M
3
GOOGL icon
Alphabet (Google) Class A
GOOGL
+$72.6M
4
GOOG icon
Alphabet (Google) Class C
GOOG
+$64.2M
5
INTC icon
Intel
INTC
+$52.9M

Top Sells

Rank Stock Value
1
SPY icon
State Street SPDR S&P 500 ETF Trust
SPY
+$51.5M
2
SLV icon
iShares Silver Trust
SLV
+$41.8M
3
F icon
Ford
F
+$26.3M
4
UAL icon
United Airlines
UAL
+$22.7M
5
XOM icon
ExxonMobil
XOM
+$22.3M

Sector Composition

Rank Sector Weight
1 Technology 0.84%
2 Communication Services 0.32%
3 Consumer Discretionary 0.32%
4 Financials 0.28%
5 Healthcare 0.2%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
NEXT icon
10676
PUT
NextDecade
NEXT
$2.11B
– –
-1,700
Closed -$11K
NGNE icon
10677
Neurogene
NGNE
$710M
$0 ﹤0.01%
9
-2,356
-100% -$57.5K
NGNE icon
10678
PUT
Neurogene
NGNE
$710M
– –
-6,470
Closed -$243K
NGS icon
10679
Natural Gas Services Group
NGS
$501M
– –
-466
Closed -$5.95K
NHC icon
10680
National Healthcare
NHC
$3.46B
– –
-602
Closed -$42.2K
NIU
10681
Niu Technologies
NIU
$201M
– –
-16,867
Closed -$143K
NJR icon
10682
New Jersey Resources
NJR
$6B
– –
-148
Closed -$6K
NJR icon
10683
PUT
New Jersey Resources
NJR
$6B
– –
-600
Closed -$27K
NKE icon
10684
Nike
NKE
$60.8B
– –
-16,726
Closed -$1.98M
NMG
10685
Nouveau Monde Graphite
NMG
$431M
– –
-1,347
Closed -$7.75K
NMIH icon
10686
NMI Holdings
NMIH
$3.16B
– –
-11,161
Closed -$203K
NMR icon
10687
Nomura Holdings
NMR
$28.6B
$0 ﹤0.01%
69
-20,053
-100% -$76.5K
NMR icon
10688
PUT
Nomura Holdings
NMR
$28.6B
– –
-12,100
Closed -$51K
NMRK icon
10689
Newmark Group
NMRK
$2.67B
– –
-51,024
Closed -$591K
NNI icon
10690
Nelnet
NNI
$4.73B
– –
-19
Closed -$1.58K
NOAH
10691
Noah Holdings
NOAH
$593M
– –
-1,749
Closed -$32.6K
NOMD icon
10692
Nomad Foods
NOMD
$1.63B
– –
-243
Closed -$4.92K
NOTV
10693
DELISTED
Inotiv
NOTV
$0 ﹤0.01%
+87
New +$1.46K
NOVT icon
10694
Novanta
NOVT
$5.1B
– –
-41
Closed -$5K
NOVT icon
10695
PUT
Novanta
NOVT
$5.1B
– –
-100
Closed -$14K
NPO icon
10696
CALL
Enpro
NPO
$7.12B
– –
-200
Closed -$19K
NRDY icon
10697
CALL
Nerdy
NRDY
$105M
– –
-1,100
Closed -$5K
NRGV icon
10698
Energy Vault
NRGV
$589M
– –
-82,532
Closed -$1.07M
NRIX icon
10699
Nurix Therapeutics
NRIX
$2.46B
$0 ﹤0.01%
7
-13
-65% -$147
NRT
10700
North European Oil Royalty Trust
NRT
$78.2M
– –
-547
Closed -$8K
426 427
428
429 430

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Simplex Trading's Q2 2022 Portfolio in Review

As of Q2 2022, Simplex Trading held 11,810 positions worth $94.1B, down 14% from $109B the previous quarter. Its ten largest holdings account for 40% of the portfolio.

Simplex Trading deployed $11.3B of net new capital in Q2 2022, opening 1,405 new positions and adding to 4,027 existing holdings. Its largest new stake was Alphabet (Google) Class C: 543,540 shares worth $59.4M.

By sector, the portfolio is most concentrated in Technology at 0.84% of assets, up from 0.67% a quarter earlier, followed by Communication Services and Consumer Discretionary.

On the sell side, the largest reduction was United Airlines, an estimated $22.7M trimmed.

  • Simplex Trading's largest Q2 2022 buy was Alphabet (Google) Class C: 543,540 shares worth $59.4M.
  • Simplex Trading added most to Apple in Q2 2022, an estimated $286M increase.
  • Simplex Trading's biggest Q2 2022 reduction was United Airlines, cutting an estimated $22.7M.
  • Simplex Trading fully exited State Street SPDR S&P 500 ETF Trust in Q2 2022, selling an estimated $51.5M.
  • Simplex Trading's ten largest holdings make up 40% of its $94.1B portfolio in Q2 2022.
  • Simplex Trading opened 1,405 new positions and closed 1,792 in Q2 2022.
  • Simplex Trading's portfolio value fell 14% quarter-over-quarter to $94.1B.

Based on Simplex Trading's 13F filing for Q2 2022, filed 3 Aug 2022.